{"title":"Sierra Marine Parts","description":"\u003ch2 dir=\"ltr\"\u003eSierra Marine Parts: Quality Aftermarket Engine \u0026amp; Drive Components\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003e​As the leading alternative to OEM equipment, \u003cb\u003eSierra Marine\u003c\/b\u003e has built a reputation for delivering high-quality, reliable parts that meet or exceed original manufacturer specifications. At \u003cb\u003eMacomb Marine Parts\u003c\/b\u003e, we offer one of the largest online inventories of Sierra components, providing cost-effective solutions for Mercruiser, Volvo Penta, Yamaha, and Chrysler\/Force engines without compromising on performance or safety.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e​Our selection covers every critical system of your vessel. From \u003cb\u003eSierra marine fuel water separators\u003c\/b\u003e and high-efficiency oil filters to complete \u003cb\u003ewater pump impeller kits\u003c\/b\u003e, we stock the maintenance items required for every service interval. For more intensive repairs, browse our collection of Sierra electrical components—including \u003cb\u003emarine starters, alternators, and distributors\u003c\/b\u003e—as well as comprehensive gasket sets and engine internal parts designed for both freshwater and saltwater applications.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e​Choosing \u003cb\u003eSierra Marine parts\u003c\/b\u003e means choosing peace of mind. Every Sierra component is backed by an industry-leading warranty, ensuring that your investment is protected season after season. Whether you are a professional mechanic or a DIY boat owner, our catalog makes it easy to find the exact cross-reference part you need to get back on the water quickly.\u003c\/p\u003e","products":[{"product_id":"inlet-valve-sierra-18-7062","title":"Sierra 18-7062 - Inlet Valve, Replaces Mercury 1395-879194011","description":"\u003ch2\u003eSierra 18-7062 - Replacement Inlet Valve for Mercury 1395-95951 and 1395-879194011\u003c\/h2\u003e\u003cp\u003eThe Sierra 18-7062 inlet valve is an aftermarket replacement cross-referenced to Mercury 1395-95951 and 1395-879194011. It provides a part-number-based option when servicing an assembly that specifies either of these inlet valves. Matching the original valve reference and installed assembly helps you choose the correct replacement without relying on engine brand alone.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-7062\u003c\/li\u003e\n\u003cli\u003eComponent: Replacement inlet valve\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury: 1395-95951 and 1395-879194011\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to help identify the correct inlet valve. Alternatively, send us your engine model and serial number by email, text or live chat, and we will confirm fitment before ordering. Include the installed assembly's identification details if it has been replaced or modified.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-7062\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: Mercury 1395-95951 and 1395-879194011\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor the related OEM option, see the \u003ca href=\"\/products\/mercury-valve-inlet-1395-879194011\"\u003eMercury 1395-879194011 inlet valve\u003c\/a\u003e. Confirm the correct reference for your installed assembly before choosing either replacement.\u003c\/p\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable engine and assembly service manual for inlet valve replacement requirements and specifications.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: What is Sierra 18-7062?\u003c\/strong\u003e\u003cbr\u003eA: It is an aftermarket replacement inlet valve with listed Mercury OEM cross-references 1395-95951 and 1395-879194011.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does Sierra 18-7062 replace Mercury 1395-879194011?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Mercury 1395-879194011 is a listed replacement reference; verify it against the parts diagram for your installed assembly before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is Mercury 1395-95951 also a listed cross-reference?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Both Mercury 1395-95951 and 1395-879194011 are listed for Sierra 18-7062.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is this a Sierra aftermarket part or a Mercury OEM valve?\u003c\/strong\u003e\u003cbr\u003eA: This product is the Sierra aftermarket inlet valve. The related Mercury 1395-879194011 valve has its own separate product listing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I confirm the inlet valve fits my engine?\u003c\/strong\u003e\u003cbr\u003eA: Check the applicable parts diagram or send your engine model and serial number by email, text or live chat. Include identification details for any replaced or modified assembly so we can help verify fitment before ordering.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042572587203,"sku":"SIERRA-18-7062","price":10.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Inlet-Valve-Sierra-18-7062-for-Reliable-Performance.jpg?v=1776948927"},{"product_id":"seal-kit-lower-unit-sierra-18-2660","title":"Sierra 18-2660 - Johnson Evinrude Lower Unit Seal Kit","description":"\u003ch2\u003eSierra 18-2660 - Johnson Evinrude Lower Unit Seal Kit, Replaces 396349 and 5000309\u003c\/h2\u003e\u003cp\u003eThe Sierra 18-2660 lower unit seal kit is an aftermarket replacement for applicable Johnson and Evinrude gearcases using OEM seal kit 396349 or 5000309. It also cross-references Mallory 9-74103. Intended for lower unit resealing work, this kit helps you select the correct replacement by part number rather than relying on engine brand alone. Confirm the gearcase application before ordering.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-2660\u003c\/li\u003e\n\u003cli\u003eComponent: Lower unit \/ gearcase seal kit\u003c\/li\u003e\n\u003cli\u003eListed compatibility: Applicable Johnson and Evinrude lower units\u003c\/li\u003e\n\u003cli\u003eReplaces Johnson\/Evinrude: 396349 and 5000309\u003c\/li\u003e\n\u003cli\u003eAftermarket cross-reference: Mallory 9-74103\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to help identify the correct lower unit seal kit. Alternatively, send us your engine model and serial number by email, text or live chat, and we will confirm fitment before ordering. If the lower unit has been replaced, include its identification details so we can check the installed gearcase.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-2660\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: Johnson\/Evinrude 396349 and 5000309\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable engine and gearcase service manual for lower unit seal replacement requirements and specifications.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the Sierra 18-2660 seal kit used for?\u003c\/strong\u003e\u003cbr\u003eA: It is a replacement lower unit seal kit for applicable Johnson and Evinrude gearcases using the listed OEM seal kit references.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does Sierra 18-2660 replace Johnson\/Evinrude 396349 and 5000309?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Both numbers are listed OEM cross-references for this kit; confirm they match your gearcase application before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is Mallory 9-74103 a listed interchange?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Mallory 9-74103 is the listed aftermarket cross-reference for Sierra 18-2660.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does this seal kit fit every Johnson or Evinrude lower unit?\u003c\/strong\u003e\u003cbr\u003eA: No universal fit is specified. Select it by the applicable parts diagram and replacement part number, then verify your engine model, serial number and installed gearcase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I confirm fitment if my lower unit has been replaced?\u003c\/strong\u003e\u003cbr\u003eA: Send your engine model and serial number along with any identification details for the replacement gearcase by email, text or live chat. We will help confirm the correct seal kit before ordering.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042573701315,"sku":"SIERRA-18-2660","price":60.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Seal-Kit-Lower-Unit-Sierra-18-2660.jpg?v=1776948936"},{"product_id":"starter-outboard-sierra-18-5606","title":"Sierra 18-5606 - Outboard Starter","description":"\u003ch2\u003eSierra 18-5606 - Outboard Starter, Mercury Replacement Cross-References\u003c\/h2\u003e\u003cp\u003eThe Sierra 18-5606 is an aftermarket outboard starter for applications matching the listed Mercury replacement numbers. Its Mercury, Arco and Mallory cross-references help you identify a replacement with confidence, provided the engine application and original starter are verified before ordering.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-5606\u003c\/li\u003e\n\u003cli\u003eComponent: Outboard starter\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury: 50-60315, 50-44369A1, 50-44369, 50-898265012 and 50-65436\u003c\/li\u003e\n\u003cli\u003eInterchange cross-references: Arco 5388 and Mallory 9-15026\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to help identify the correct starter. Alternatively, send us your engine model and serial number by email, text or live chat, and we will confirm fitment before you order.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-5606\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: Mercury 50-60315, 50-44369A1, 50-44369, 50-898265012 and 50-65436\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable engine service manual for starter replacement requirements and specifications.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: What is Sierra 18-5606?\u003c\/strong\u003e\u003cbr\u003eA: It is an aftermarket outboard starter for applications matching its listed replacement part numbers.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which Mercury starter numbers does it replace?\u003c\/strong\u003e\u003cbr\u003eA: The listed Mercury references are 50-60315, 50-44369A1, 50-44369, 50-898265012 and 50-65436; confirm your engine application before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does it cross-reference Arco 5388?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Arco 5388 is a listed interchange reference for Sierra 18-5606.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is Mallory 9-15026 a listed interchange?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Mallory 9-15026 is listed as an interchange reference; engine fitment should still be verified.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How can I confirm the correct starter?\u003c\/strong\u003e\u003cbr\u003eA: Check the parts diagrams on our website or send your engine model and serial number by email, text or live chat for fitment confirmation before ordering.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042574225603,"sku":"SIERRA-18-5606","price":177.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Starter-Outboard-Sierra-18-5606.jpg?v=1776948938"},{"product_id":"sierra-o-ring-18-7108","title":"Sierra 18-7108 - O-Ring, Replaces OMC Johnson Evinrude 338518","description":"\u003ch2\u003eSierra 18-7108 - Replacement O-Ring for OMC \/ Johnson \/ Evinrude 338518\u003c\/h2\u003e\u003cp\u003eThe Sierra 18-7108 O-ring is an aftermarket replacement cross-referenced to OMC, Johnson and Evinrude part number 338518 and Mallory 9-76522. It offers a targeted sealing-component replacement when your assembly's parts diagram specifies the listed reference. Matching the original part number and installed assembly provides better fit confidence than selecting an O-ring by brand or appearance alone.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-7108\u003c\/li\u003e\n\u003cli\u003eComponent: Replacement O-ring\u003c\/li\u003e\n\u003cli\u003eReplaces OMC \/ Johnson \/ Evinrude: 338518\u003c\/li\u003e\n\u003cli\u003eAftermarket cross-reference: Mallory 9-76522\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to help identify the correct O-ring and its position in the assembly. Alternatively, send us your engine model and serial number by email, text or live chat, and we will confirm fitment before ordering. Include identification details for any replaced or modified assembly.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-7108\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: OMC \/ Johnson \/ Evinrude 338518\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable engine and assembly service manual for O-ring replacement requirements and specifications.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: What does Sierra 18-7108 replace?\u003c\/strong\u003e\u003cbr\u003eA: Its listed OEM reference is OMC \/ Johnson \/ Evinrude 338518, with Mallory 9-76522 as the aftermarket cross-reference.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM Johnson Evinrude O-ring?\u003c\/strong\u003e\u003cbr\u003eA: This is the Sierra aftermarket replacement O-ring, not an OEM-branded product.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does it fit every Johnson or Evinrude engine?\u003c\/strong\u003e\u003cbr\u003eA: No universal fit is specified. Confirm that the parts diagram for your installed assembly calls for the listed replacement reference.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I select this O-ring by appearance alone?\u003c\/strong\u003e\u003cbr\u003eA: Appearance alone does not confirm the correct size or application. Use the assembly diagram and part-number cross-reference to identify the replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How can I verify fitment before ordering?\u003c\/strong\u003e\u003cbr\u003eA: Check the website's parts diagrams or send your engine model, serial number and relevant assembly details by email, text or live chat for confirmation.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042574291139,"sku":"SIERRA-18-7108","price":0.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/O-Ring-Sierra-18-7108.jpg?v=1776948940"},{"product_id":"seal-kit-lower-unit-sierra-18-2794-1","title":"Sierra 18-2794-1 - Yamaha Lower Unit Seal Kit","description":"\u003ch2\u003eSierra 18-2794-1 - Yamaha Outboard Lower Unit Seal Kit\u003c\/h2\u003e\u003cp\u003eThe Sierra 18-2794-1 lower unit seal kit is an aftermarket replacement for applicable Yamaha outboard gearcases. It cross-references six Yamaha seal kit numbers, along with Mallory 9-74539 and earlier Sierra 18-2794 and 18-2795 kits. These replacement references make it easier to identify the appropriate kit for gearcase resealing without relying on engine brand alone. Confirm the installed lower unit and its specified seal kit before ordering.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-2794-1\u003c\/li\u003e\n\u003cli\u003eComponent: Lower unit \/ gearcase seal kit\u003c\/li\u003e\n\u003cli\u003eListed application: Applicable Yamaha outboard lower units\u003c\/li\u003e\n\u003cli\u003eReplaces Yamaha: 6E5-W0001-F1-00, 6E5-W0001-51-00, 6F3-W0001-C1-00, 6G5-W0001-C1-00, 6G5-W0001-21-00 and 6F3-W0001-21-00\u003c\/li\u003e\n\u003cli\u003eReplaces Sierra: 18-2794 and 18-2795\u003c\/li\u003e\n\u003cli\u003eAftermarket cross-reference: Mallory 9-74539\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to help identify the correct Yamaha lower unit seal kit. Alternatively, send us your engine model and serial number by email, text or live chat, and we will confirm fitment before ordering. If the lower unit has been replaced, include its identification details so we can check the installed gearcase.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-2794-1\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: Yamaha 6E5-W0001-F1-00, 6E5-W0001-51-00, 6F3-W0001-C1-00, 6G5-W0001-C1-00, 6G5-W0001-21-00 and 6F3-W0001-21-00\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable Yamaha engine and gearcase service manual for lower unit seal replacement requirements and specifications.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: What is Sierra 18-2794-1 used for?\u003c\/strong\u003e\u003cbr\u003eA: It is a replacement lower unit seal kit for applicable Yamaha outboard gearcases using one of the listed seal kit cross-references.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does it replace Yamaha 6E5-W0001-F1-00?\u003c\/strong\u003e\u003cbr\u003eA: Yes. That number is a listed replacement reference, along with 6E5-W0001-51-00, 6F3-W0001-C1-00, 6G5-W0001-C1-00, 6G5-W0001-21-00 and 6F3-W0001-21-00. Verify your gearcase application before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does this kit replace Sierra 18-2794 and 18-2795?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Both earlier Sierra part numbers are listed replacement references for 18-2794-1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is Mallory 9-74539 a listed interchange?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Mallory 9-74539 is the listed aftermarket cross-reference.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Will this fit every Yamaha outboard lower unit?\u003c\/strong\u003e\u003cbr\u003eA: No universal fit is specified. Check the applicable parts diagram or send your engine model, serial number and any replacement gearcase details by email, text or live chat for confirmation before ordering.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042574454979,"sku":"SIERRA-18-2794-1","price":101.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Seal-Kit-Lower-Unit-Sierra-18-2794-1.jpg?v=1776948941"},{"product_id":"prestolite-distributor-ignition-pickup","title":"Sierra 18-5103 - Prestolite Distributor Ignition Pickup","description":"\u003ch2\u003eSierra 18-5103 - Prestolite Distributor Ignition Pickup for Chrysler Small-Block Engines\u003c\/h2\u003e\u003cp\u003eThe Sierra 18-5103 ignition pickup is a replacement component for Prestolite electronic distributors used on Chrysler LM318, M340 and M360 marine engines. It replaces Chrysler 3780600 and 3656738 and Prestolite 7-176, offering a targeted replacement when the distributor pickup requires service. The mounting plate is not included. Confirm the installed distributor and engine application before ordering, especially where the ignition system has been changed.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-5103\u003c\/li\u003e\n\u003cli\u003eComponent: Prestolite electronic distributor ignition pickup\u003c\/li\u003e\n\u003cli\u003eListed engine applications: Chrysler small-block LM318, M340 and M360 with Prestolite electronic distributors\u003c\/li\u003e\n\u003cli\u003eListed application range: 1983 and later, subject to distributor and engine verification\u003c\/li\u003e\n\u003cli\u003eReplaces Chrysler: 3780600 and 3656738\u003c\/li\u003e\n\u003cli\u003eReplaces Prestolite: 7-176\u003c\/li\u003e\n\u003cli\u003eMounting plate: Not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to help identify the correct ignition pickup. Alternatively, send us your engine model and serial number by email, text or live chat, and we will confirm fitment before ordering. Let us know if the distributor has been replaced or converted.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-5103\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: Chrysler 3780600, Chrysler 3656738 and Prestolite 7-176\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eServicing the same distributor family? See the \u003ca href=\"\/products\/sierra-prestolite-reluctor-18-5102\"\u003eSierra 18-5102 Prestolite reluctor \/ trigger wheel\u003c\/a\u003e, listed for Chrysler LM318, M340 and M360 engines with Prestolite electronic distributors. It is a separate component, not a substitute for the pickup; confirm both parts against your distributor.\u003c\/p\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable engine and distributor service manual for ignition pickup replacement requirements and specifications.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: Which engines use the Sierra 18-5103 ignition pickup?\u003c\/strong\u003e\u003cbr\u003eA: Its listed applications are Chrysler LM318, M340 and M360 small-block marine engines with Prestolite electronic distributors, with a listed range of 1983 and later; verify the installed distributor before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which original part numbers does Sierra 18-5103 replace?\u003c\/strong\u003e\u003cbr\u003eA: It replaces Chrysler 3780600 and 3656738 and Prestolite 7-176.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is the distributor mounting plate included?\u003c\/strong\u003e\u003cbr\u003eA: No. The plate is not included with this ignition pickup.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is this the same part as the Sierra 18-5102 reluctor?\u003c\/strong\u003e\u003cbr\u003eA: No. Sierra 18-5103 is the ignition pickup; Sierra 18-5102 is a separate reluctor or trigger wheel listed for the same engine and distributor family.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Will this fit an engine with a converted ignition system?\u003c\/strong\u003e\u003cbr\u003eA: Engine model alone does not confirm fitment after an ignition conversion. Send your engine model, serial number and distributor details by email, text or live chat so we can check the correct replacement before ordering.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042574553283,"sku":"SIERRA-18-5103","price":73.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Prestolite-Distributor-Ignition-Pickup-Sierra-18-5103.jpg?v=1776948944"},{"product_id":"sierra-o-ring-18-7467","title":"Sierra 18-7467 - O-Ring, Replaces Mercury 25-54030","description":"\u003ch2\u003eSierra 18-7467 - Replacement O-Ring for Mercury 25-54030 and OMC 509008\u003c\/h2\u003e\u003cp\u003eThe Sierra 18-7467 O-ring is an aftermarket replacement cross-referenced to Mercury 25-54030 and OMC \/ Johnson \/ Evinrude 509008. These references provide a precise starting point when replacing the sealing component specified in your assembly's parts diagram. Confirm the installed assembly and required part number before ordering; the cross-brand references do not establish universal engine compatibility.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-7467\u003c\/li\u003e\n\u003cli\u003eComponent: Replacement O-ring\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury: 25-54030\u003c\/li\u003e\n\u003cli\u003eReplaces OMC \/ Johnson \/ Evinrude: 509008\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to help identify the correct O-ring and its position in the assembly. Alternatively, send us your engine model and serial number by email, text or live chat, and we will confirm fitment before ordering. Include identification details for any replaced or modified assembly.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-7467\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: Mercury 25-54030 and OMC \/ Johnson \/ Evinrude 509008\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable engine and assembly service manual for O-ring replacement requirements and specifications.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: Does Sierra 18-7467 replace Mercury 25-54030?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Mercury 25-54030 is a listed OEM cross-reference; confirm it matches the required part in your assembly's diagram.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is OMC \/ Johnson \/ Evinrude 509008 also listed?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Part number 509008 is the listed OMC \/ Johnson \/ Evinrude replacement reference.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does the cross-brand listing mean it fits every engine from those brands?\u003c\/strong\u003e\u003cbr\u003eA: No. Fitment depends on the specific assembly calling for one of the listed part references, not the engine brand alone.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is this an OEM-branded O-ring?\u003c\/strong\u003e\u003cbr\u003eA: This product is the Sierra aftermarket replacement, identified by Sierra part number 18-7467.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How can I confirm the correct O-ring before ordering?\u003c\/strong\u003e\u003cbr\u003eA: Check the parts diagrams on our website or send your engine model, serial number and relevant assembly identification details by email, text or live chat for confirmation.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042574684355,"sku":"SIERRA-18-7467","price":4.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/O-Ring-Sierra-18-7467.jpg?v=1776948946"},{"product_id":"sierra-o-ring-18-7149","title":"Sierra 18-7149-9 - O-Rings, Pack of 5, Replaces Volvo 955989","description":"\u003ch2\u003eSierra 18-7149-9 - Replacement O-Rings, Pack of 5\u003c\/h2\u003e\u003cp\u003eThe Sierra 18-7149-9 five-pack provides replacement O-rings cross-referenced to Volvo Penta 955989 and Sierra 18-7149. Five seals in one package make it practical to keep replacements together for assemblies calling for this specific part. Match the reference in your parts diagram before ordering; this is not a mixed-size O-ring assortment or a complete assembly seal kit. For the OEM-branded alternative, see the \u003ca href=\"\/products\/volvo-o-ring-955989\"\u003eVolvo 955989 O-ring\u003c\/a\u003e.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-7149-9\u003c\/li\u003e\n\u003cli\u003eComponent: Replacement O-ring\u003c\/li\u003e\n\u003cli\u003ePackage Quantity: 5 O-rings\u003c\/li\u003e\n\u003cli\u003eReplaces Volvo Penta: 955989\u003c\/li\u003e\n\u003cli\u003eListed Sierra Replacement Reference: 18-7149\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to identify the correct O-ring for your assembly. Alternatively, send us your engine model and serial number by email, text or live chat, and we will confirm fitment before ordering. Include the installed assembly's identification if it has been replaced or modified.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-7149-9\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: Volvo Penta 955989\u003c\/li\u003e\n\u003cli\u003eKit Contents: 5 O-rings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable engine and assembly service manual for O-ring replacement requirements and specifications.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: How many O-rings are included with Sierra 18-7149-9?\u003c\/strong\u003e\u003cbr\u003eA: This product is a pack of five O-rings, not a single seal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does this pack replace Volvo Penta 955989?\u003c\/strong\u003e\u003cbr\u003eA: Volvo Penta 955989 is the listed OEM cross-reference; verify that your assembly's parts diagram specifies that seal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How does 18-7149-9 relate to Sierra 18-7149?\u003c\/strong\u003e\u003cbr\u003eA: This five-pack is identified as 18-7149-9, and its listed Sierra replacement reference is 18-7149.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is this a complete seal kit or an assortment?\u003c\/strong\u003e\u003cbr\u003eA: No. It contains five O-rings of the listed replacement type, rather than all seals for an assembly or a selection of different sizes.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can you help confirm the correct seal before ordering?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Check our website's parts diagrams or send your engine model, serial number and relevant assembly identification by email, text or live chat for fitment confirmation.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042574880963,"sku":"SIERRA-18-7149-9","price":3.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/O-Ring-pack-of-5-Sierra-18-7149-9.jpg?v=1776948950"},{"product_id":"lower-unit-seal-kit-sierra-18-2658","title":"Sierra 18-2658 - Johnson Evinrude Lower Unit Seal Kit","description":"\u003ch2\u003eSierra 18-2658 - Johnson Evinrude Lower Unit Seal Kit, Replaces 396351\u003c\/h2\u003e\u003cp\u003eThe Sierra 18-2658 lower unit seal kit is an aftermarket replacement for applicable Johnson and Evinrude gearcases using seal kit 396351. Its listed cross-references also include Mercury 802340 and Mallory 9-74101. For a gearcase resealing project, these part numbers provide a more precise starting point than engine brand alone. Match the kit to the installed lower unit before ordering; a cross-reference does not imply universal compatibility across either brand.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-2658\u003c\/li\u003e\n\u003cli\u003eComponent: Lower unit \/ gearcase seal kit\u003c\/li\u003e\n\u003cli\u003eListed application: Applicable Johnson and Evinrude lower units\u003c\/li\u003e\n\u003cli\u003eReplaces Johnson\/Evinrude: 396351\u003c\/li\u003e\n\u003cli\u003eListed Mercury replacement reference: 802340\u003c\/li\u003e\n\u003cli\u003eAftermarket cross-reference: Mallory 9-74101\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to help identify the correct lower unit seal kit. Alternatively, send us your engine model and serial number by email, text or live chat, and we will confirm fitment before ordering. If the lower unit has been replaced, include its identification details so we can check the installed gearcase.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-2658\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: Johnson\/Evinrude 396351 and Mercury 802340\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable engine and gearcase service manual for lower unit seal replacement requirements and specifications.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: What is Sierra 18-2658 used for?\u003c\/strong\u003e\u003cbr\u003eA: It is a replacement lower unit seal kit for applicable Johnson and Evinrude gearcases matching the listed seal kit references.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does this kit replace Johnson\/Evinrude 396351?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Johnson\/Evinrude 396351 is a listed OEM replacement reference for Sierra 18-2658; verify it against your gearcase parts diagram before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Why is Mercury 802340 listed on a Johnson Evinrude seal kit?\u003c\/strong\u003e\u003cbr\u003eA: Mercury 802340 is a replacement reference in this product's listing. It does not establish fitment for every Mercury lower unit; confirm the exact gearcase application before selecting the kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is Mallory 9-74101 a listed interchange?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Mallory 9-74101 is the listed aftermarket cross-reference for Sierra 18-2658.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How can I check fitment for a replacement lower unit?\u003c\/strong\u003e\u003cbr\u003eA: Send your engine model and serial number plus any identification details for the installed lower unit by email, text or live chat. We will help verify the correct seal kit before ordering.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042574946499,"sku":"SIERRA-18-2658","price":56.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Lower-Unit-Seal-Kit-Sierra-18-2658.jpg?v=1776948952"},{"product_id":"sierra-power-trim-bushing-for-mercruiser","title":"Sierra 18-2701 - Mercruiser Power Trim Bushing","description":"\u003ch2\u003eSierra 18-2701 - Mercruiser Power Trim Bushing, Replaces 23-89574\u003c\/h2\u003e\u003cp\u003eThe Sierra 18-2701 power trim bushing is an aftermarket replacement for listed Mercruiser 120\/260 sterndrive applications at serial number 6225276 and below. It replaces Mercruiser 23-89574 and cross-references Mallory 9-77003, providing a focused replacement option when servicing the applicable trim assembly. Match the installed drive's serial number and parts diagram before ordering; the Mercruiser brand name alone does not establish fitment.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-2701\u003c\/li\u003e\n\u003cli\u003eComponent: Power trim bushing\u003c\/li\u003e\n\u003cli\u003eListed application: Mercruiser 120\/260 sterndrives\u003c\/li\u003e\n\u003cli\u003eListed serial-number range: 6225276 and below\u003c\/li\u003e\n\u003cli\u003eReplaces Mercruiser: 23-89574\u003c\/li\u003e\n\u003cli\u003eAftermarket cross-reference: Mallory 9-77003\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to help identify the correct power trim bushing. Alternatively, send us your engine model and serial number, plus the sterndrive model and serial number, by email, text or live chat, and we will confirm fitment before ordering. If the drive or trim assembly has been replaced, include its identification details.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-2701\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: Mercruiser 23-89574\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor the related OEM option, see the \u003ca href=\"\/products\/mercury-frt-anchor-pin-rubber-bush-8-23-89574\"\u003eMercury 23-89574 front anchor pin bushing\u003c\/a\u003e. Confirm the required part and quantity against your trim assembly diagram before selecting either replacement.\u003c\/p\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable Mercruiser sterndrive service manual for power trim bushing replacement requirements and specifications.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: Which drives are listed for Sierra 18-2701?\u003c\/strong\u003e\u003cbr\u003eA: The listing identifies Mercruiser 120\/260 sterndrives at serial number 6225276 and below, subject to verification against the installed assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does the serial-number limit include 6225276?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The listed range is 6225276 and below. Do not assume compatibility with later drives without checking their parts diagrams.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which Mercruiser bushing does it replace?\u003c\/strong\u003e\u003cbr\u003eA: Mercruiser 23-89574 is the listed OEM replacement reference for Sierra 18-2701.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is Mallory 9-77003 a listed interchange?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Mallory 9-77003 is the listed aftermarket cross-reference.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: How do I confirm fitment if my sterndrive has been replaced?\u003c\/strong\u003e\u003cbr\u003eA: Send the engine and installed sterndrive models and serial numbers, along with any trim assembly identification details, by email, text or live chat. We will help verify the correct bushing before ordering.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042575175875,"sku":"SIERRA-18-2701","price":7.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Mercruiser-Power-Trim-Bushing-Sierra-18-2701.jpg?v=1776948953"},{"product_id":"sierra-lower-water-pump-base-to-wear-pla","title":"Sierra 18-2823-9 - Lower Water Pump Gasket, 2-Pack","description":"\u003ch2\u003eSierra 18-2823-9 - Lower Water Pump Base-to-Wear-Plate Gasket, 2-Pack\u003c\/h2\u003e\u003cp\u003eFor water-pump service on selected Mercury and Mercruiser applications, Sierra 18-2823-9 provides the gasket for the lower pump base-to-wear-plate joint. This aftermarket two-pack replaces Mercury 27-19553 and Mercury\/Mercruiser 27-32769 where specified. Identifying the correct joint and OEM reference helps you select the right gasket rather than a similar-looking seal elsewhere in the pump assembly.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-2823-9\u003c\/li\u003e\n\u003cli\u003eComponent: Lower water pump base-to-wear-plate gasket\u003c\/li\u003e\n\u003cli\u003ePackage Quantity: 2 gaskets\u003c\/li\u003e\n\u003cli\u003eListed Applications: Selected Mercury and Mercruiser water-pump assemblies; confirm by model and serial number\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury: 27-19553 and 27-32769\u003c\/li\u003e\n\u003cli\u003eReplaces Mercruiser: 27-32769\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to identify the correct gasket and pump assembly. Alternatively, send us your engine model and serial number by email, text or live chat, and we'll confirm fitment before you order; include the drive model and serial number for Mercruiser applications.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-2823-9\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: Mercury 27-19553; Mercury\/Mercruiser 27-32769\u003c\/li\u003e\n\u003cli\u003eKit Contents: 2 lower water pump base-to-wear-plate gaskets\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePlanning a broader lower-unit reseal? The \u003ca href=\"\/products\/sierra-lower-unit-seal-kit-for-mercury-mariner-18-2654\"\u003eSierra 18-2654 Mercury\/Mariner lower-unit seal kit\u003c\/a\u003e lists the 18-2823 gasket among its components. Confirm that kit's application separately; this two-pack is not a complete lower-unit seal kit.\u003c\/p\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable Mercury or Mercruiser service manual for gasket placement, mating-surface requirements and water-pump assembly specifications.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: Where does Sierra 18-2823-9 fit in the water pump?\u003c\/strong\u003e\u003cbr\u003eA: It is listed for the joint between the lower water pump base and wear plate, not as a general replacement for every gasket in the pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does one package contain one gasket or two?\u003c\/strong\u003e\u003cbr\u003eA: This listing is for a package of two lower water pump gaskets.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which OEM part numbers does it replace?\u003c\/strong\u003e\u003cbr\u003eA: The listed references are Mercury 27-19553 and 27-32769, plus Mercruiser 27-32769. Match the reference to your assembly's parts diagram before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is this a complete water-pump repair kit?\u003c\/strong\u003e\u003cbr\u003eA: No. The package contains two gaskets only; it does not include an impeller, pump housing or the other seals needed for a complete pump rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Will it fit every Mercury outboard or Mercruiser drive?\u003c\/strong\u003e\u003cbr\u003eA: No universal fitment is established. Check your engine and, where applicable, drive model and serial number against the parts diagram, or contact us by email, text or live chat for verification.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042576289987,"sku":"SIERRA-18-2823-9","price":5.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/2-Pack-of-Lower-Water-Pump-Gasket-Sierra-18-2823-9.jpg?v=1776948961"},{"product_id":"sierra-impeller-kit-18-3047","title":"Impeller Kit | Sierra 18-3047","description":"\u003ch2\u003eImpeller Kit | Sierra 18-3047\u003c\/h2\u003e\n\u003cp\u003eImpeller Kit | Sierra 18-3047\u003c\/p\u003e\n\u003cp\u003eSIERRA Impeller Kit | 18-3047\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eImpeller Kit\u003c\/li\u003e\n\u003cli\u003e12 blade impeller\u003c\/li\u003e\n\u003cli\u003e2 9\/16 in. diameter\u003c\/li\u003e\n\u003cli\u003e1 5\/8 in. width\u003c\/li\u003e\n\u003cli\u003eGaskets included\u003c\/li\u003e\n\u003cli\u003eReplaces Crusader 20310, R061017, RP061017\u003c\/li\u003e\n\u003cli\u003eReplaces Oberdorfer 8922\u003c\/li\u003e\n\u003cli\u003eReplaces Volvo Penta 835874\u003c\/li\u003e\n\u003cli\u003eReplaces Mallory 9-45706\u003c\/li\u003e\n\u003cli\u003eReplaces Sierra 18-3061\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042576421059,"sku":"SIERRA-18-3047","price":41.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Impeller-Kit-Sierra-18-3047.jpg?v=1776948964"},{"product_id":"omc-cobra-shift-cable-bellows-sierra-1","title":"Sierra 18-2763 - OMC Cobra Shift Cable Bellows","description":"\u003ch2\u003eSierra 18-2763 - OMC Cobra Shift Cable Bellows\u003c\/h2\u003e\u003cp\u003eWhen servicing the shift-cable bellows on an OMC Cobra stern drive, matching the replacement to the cable passage matters more than choosing a bellows by appearance. Sierra 18-2763 is the listed aftermarket shift cable bellows replacement for OMC 911826, with Mercury 802388 and Mallory 9-72709 cross-references. It addresses the shift-cable bellows service position, not the separate exhaust or U-joint bellows.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-2763\u003c\/li\u003e\n\u003cli\u003eComponent: Shift cable bellows\u003c\/li\u003e\n\u003cli\u003eListed Drive Family: OMC Cobra stern drives; verify the specific drive configuration before ordering\u003c\/li\u003e\n\u003cli\u003eReplaces OMC: 911826\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury: 802388\u003c\/li\u003e\n\u003cli\u003eReplaces Mallory: 9-72709\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to identify the shift-cable bellows for your drive. Alternatively, send us your engine model and serial number, together with the stern-drive model and serial number, by email, text or live chat, and we'll confirm fitment before you order.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-2763\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: OMC 911826; Mercury 802388\u003c\/li\u003e\n\u003cli\u003eAftermarket Cross-Reference: Mallory 9-72709\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor a broader transom service, compare the \u003ca href=\"\/products\/sierra-omc-cobra-transom-service-kit-18-2771\"\u003eSierra 18-2771 OMC Cobra transom seal kit\u003c\/a\u003e, which lists a shift cable bellows along with other bellows and service components. That kit is specified for Cobra drives without cone clutch; confirm its fitment independently rather than assuming every Cobra configuration uses the same kit.\u003c\/p\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable OMC Cobra service manual for shift-cable bellows installation, attachment requirements and any related cable service or adjustment specifications.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: Is Sierra 18-2763 the shift cable bellows or the U-joint bellows?\u003c\/strong\u003e\u003cbr\u003eA: It is the shift cable bellows. The U-joint and exhaust bellows occupy separate service positions and should not be substituted for it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which part numbers does this bellows replace?\u003c\/strong\u003e\u003cbr\u003eA: The listing identifies OMC 911826, Mercury 802388 and Mallory 9-72709 as replacement references. Check the reference shown in your drive's parts diagram.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does the Mercury 802388 reference mean it fits every Mercruiser drive?\u003c\/strong\u003e\u003cbr\u003eA: No. A replacement reference does not establish universal Mercruiser compatibility; match the exact part requirement and drive configuration before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Are a replacement shift cable and clamps included?\u003c\/strong\u003e\u003cbr\u003eA: A replacement cable and clamps are not confirmed in this listing. Do not assume additional hardware is supplied with the bellows.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Should I choose this bellows or a complete transom seal kit?\u003c\/strong\u003e\u003cbr\u003eA: This listing addresses the shift cable bellows alone. A broader kit may suit a larger service job, but its contents and drive restrictions must be checked separately, including any cone-clutch exclusions.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042576453827,"sku":"SIERRA-18-2763","price":14.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/OMC-Cobra-Shift-Cable-Bellows-Sierra-18-2763.jpg?v=1776948967"},{"product_id":"sierra-rewind-spring-18-6503","title":"Sierra 18-6503 - Rewind Spring","description":"\u003ch2\u003eSierra 18-6503 - Rewind Spring\u003c\/h2\u003e\u003cp\u003eA rewind-spring repair starts with the correct spring for the starter assembly, not simply the engine brand. Sierra 18-6503 offers a separately listed replacement for Mercury 878898 and OMC\/Johnson\/Evinrude 318944, allowing you to select the spring by its established part reference. Confirm the assembly shown in your engine's parts diagram before choosing this component for starter service.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-6503\u003c\/li\u003e\n\u003cli\u003eComponent: Rewind spring\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury: 878898\u003c\/li\u003e\n\u003cli\u003eReplaces OMC\/Johnson\/Evinrude: 318944\u003c\/li\u003e\n\u003cli\u003eFitment Basis: Matching starter-assembly part reference; specific horsepower and model-year ranges are not established in this listing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to identify the rewind spring specified for your starter assembly. Alternatively, send us your engine model and serial number by email, text or live chat, and we'll confirm the correct part before you order.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-6503\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: Mercury 878898; OMC\/Johnson\/Evinrude 318944\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable engine service manual for safe handling of the spring under tension and the specified rewind-starter assembly and tensioning requirements.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: Which original part numbers does Sierra 18-6503 replace?\u003c\/strong\u003e\u003cbr\u003eA: The listed replacement references are Mercury 878898 and OMC\/Johnson\/Evinrude 318944; match the required spring number in your engine's parts diagram.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Will this spring fit any Mercury, Johnson or Evinrude starter?\u003c\/strong\u003e\u003cbr\u003eA: No universal fitment is established. The starter assembly must call for the listed replacement reference, and engine model and serial number should be checked before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is this a complete starter assembly?\u003c\/strong\u003e\u003cbr\u003eA: This listing identifies the rewind spring as the service component. It does not establish that a starter housing, pulley, rope or handle is included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I select a replacement spring by its appearance alone?\u003c\/strong\u003e\u003cbr\u003eA: Appearance alone does not confirm fitment, and this listing does not provide dimensions or attachment details. Use the parts diagram and original part number to identify the correct spring.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What should I check before handling a rewind spring?\u003c\/strong\u003e\u003cbr\u003eA: Consult the applicable service manual's precautions for stored spring tension before disassembling the starter; use qualified marine service assistance if you are unfamiliar with the assembly.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042576715971,"sku":"SIERRA-18-6503","price":37.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Rewind-Spring-Sierra-18-6503.jpg?v=1776948969"},{"product_id":"sierra-o-ring-18-7193","title":"O-Ring (Priced Per Pkg of 5) Sierra | 18-7193-9","description":"\u003ch2\u003eO-Ring (Priced Per Pkg of 5) Sierra | 18-7193-9\u003c\/h2\u003e\n\u003cp\u003eO-Ring (Priced Per Pkg of 5) Sierra | 18-7193-9\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eO-Ring\u003c\/li\u003e\n\u003cli\u003eReplaces Volvo Penta 955974\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042576781507,"sku":"SIERRA-18-7193-9","price":13.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/O-Ring-Priced-Per-Pkg-of-5-Sierra-18-7193-9.jpg?v=1776948971"},{"product_id":"sierra-oil-seal-18-2074","title":"Oil Seal | Sierra 18-2074","description":"\u003ch2\u003eOil Seal | Sierra 18-2074\u003c\/h2\u003e\n\u003cp\u003eOil Seal | Sierra 18-2074\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOil Seal\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReplaces Mercury 802055\u003c\/li\u003e\n\u003cli\u003eReplaces OMC\/Johnson\/Evinrude 339620\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042576814275,"sku":"SIERRA-18-2074","price":15.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Oil-Seal-Sierra-18-2074.jpg?v=1776948973"},{"product_id":"sierra-power-trim-relay-18-5704","title":"Power Trim Relay | Sierra 18-5704","description":"\u003ch2\u003ePower Trim Relay | Sierra 18-5704\u003c\/h2\u003e\n\u003cp\u003eSierra Power Trim Relay | 18-5704\u003c\/p\u003e\n\u003cp\u003eAftermarket power trim relay with mounting tab for older Volvo Penta AQ 270 and 280 model outdrives.\u003c\/p\u003e\n\u003cdiv class=\"u-std std\"\u003e\n\u003cul\u003e\n\u003cli\u003e20 amps resistive\u003c\/li\u003e\n\u003cli\u003e15 amps inductive\u003c\/li\u003e\n\u003cli\u003eSingle pole 5 terminal\u003c\/li\u003e\n\u003cli\u003eRelay for the mechanical lifting device used on Volvo Penta AQ270 and AQ280 stern drives\u003c\/li\u003e\n\u003cli\u003eReplaces Volvo Penta part 876037\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042576847043,"sku":"SIERRA-18-5704","price":21.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Power-Trim-Relay-Sierra-18-5704.jpg?v=1776948974"},{"product_id":"sierra-o-ring-18-7194","title":"O-Ring | Sierra 18-7194","description":"\u003ch2\u003eO-Ring | Sierra 18-7194\u003c\/h2\u003e\n\u003cp\u003eO-Ring | Sierra 18-7194\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eO-Ring\u003c\/li\u003e\n\u003cli\u003eReplaces Volvo Penta 956000\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042577207491,"sku":"SIERRA-18-7194","price":8.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/O-Ring-Sierra-18-7194.jpg?v=1776948979"},{"product_id":"sierra-mercruiser-oil-seal-18-2094","title":"Sierra 18-2094 - Mercruiser Oil Seal","description":"\u003ch2\u003eSierra 18-2094 - Mercruiser Oil Seal\u003c\/h2\u003e\u003cp\u003eFor a Mercruiser repair that calls for Sierra 18-2094, this separately listed oil seal lets you select the seal without purchasing the bearing kit. It is also identified as the seal component in Sierra's 18-2100K seal and gimbal bearing kit. Match the seal position in your drive's parts diagram before ordering; the kit relationship helps identify a service option but does not establish universal Mercruiser fitment.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-2094\u003c\/li\u003e\n\u003cli\u003eComponent: Oil seal\u003c\/li\u003e\n\u003cli\u003eListed Brand Application: Mercruiser; verify the specific drive and seal position\u003c\/li\u003e\n\u003cli\u003eRelated Kit: Sierra 18-2100K lists one 18-2094 seal and one 18-2100 gimbal bearing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to identify the seal required for your drive assembly. Alternatively, send us your engine model and serial number, along with the drive model and serial number, by email, text or live chat, and we'll confirm fitment before you order.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-2094\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIf the repair also requires a gimbal bearing, compare the \u003ca href=\"\/products\/mercruiser-seal-gimbal-bearing-kit-sierra-18-2100k\"\u003eSierra 18-2100K Mercruiser seal and gimbal bearing kit\u003c\/a\u003e. Its listing specifies Mercruiser 1, R, MR and Alpha stern drives from 1974–1997 and includes the 18-2094 seal; confirm that kit's application separately against your drive's identification.\u003c\/p\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable Mercruiser service manual for seal orientation, installation depth, mating-surface requirements and any specified installation tools.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: Is Sierra 18-2094 a seal or a gimbal bearing?\u003c\/strong\u003e\u003cbr\u003eA: It is the oil seal. The related Sierra 18-2100K kit separately lists an 18-2094 seal and an 18-2100 gimbal bearing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does this seal fit every Mercruiser drive?\u003c\/strong\u003e\u003cbr\u003eA: Universal fitment is not established. Verify the drive model, serial number and required seal position using the applicable parts diagram.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What are the seal's dimensions and material?\u003c\/strong\u003e\u003cbr\u003eA: Dimensions and seal material are not provided in this listing. Do not choose it by appearance or an assumed size; confirm the required part for your assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: When should I consider the 18-2100K kit instead?\u003c\/strong\u003e\u003cbr\u003eA: Compare the kit when your repair requires both the oil seal and gimbal bearing. The kit's listed drive families and 1974–1997 range must be checked independently before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which way should this oil seal face during installation?\u003c\/strong\u003e\u003cbr\u003eA: Use the orientation and installation-depth instructions in the service manual for your exact Mercruiser assembly rather than assuming a direction from the seal's appearance.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042577502403,"sku":"SIERRA-18-2094","price":23.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Sierra-Mercruiser-Oil-Seal-18-2094.jpg?v=1776948985"},{"product_id":"sierra-power-trim-cylinder-housing-18-21","title":"Mercruiser Power Trim Cylinder Housing | Sierra 18-2148","description":"\u003cp\u003eMercruiser Power Trim Cylinder Housing | Sierra 18-2148\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFits all Mercruiser stern drive models: 120, 140, 160, 165, 888, 898, 228, 225-S, 233, 250, 260, 470 \u0026amp; 485\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMercruiser Power Trim Cylinder Housing\u003c\/li\u003e\n\u003cli\u003eFor Mercruiser models 120, 140, 160, 165, 888, 898, 228, 225-S, 233, 250, 260, 470 and 485\u003c\/li\u003e\n\u003cli\u003eReplaces Mercruiser 77443, 45523, 45706A4, 77442A1\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042577731779,"sku":"SIERRA-18-2148","price":136.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Mercruiser-Power-Trim-Cylinder-Housing-Sierra-18-2148.jpg?v=1776948986"},{"product_id":"sierra-solenoid-18-5814","title":"Solenoid | Sierra 18-5814 - MacombMarineParts.com","description":"\u003ch2\u003eSierra Solenoid | Sierra 18-5814\u003c\/h2\u003e\n\u003cp\u003eSierra Solenoid | Sierra 18-5814\u003c\/p\u003e\n\u003cdiv class=\"product attribute overview\"\u003e\n\u003cdiv class=\"value\"\u003eIsolated base12V starter solenoid and tilt \u0026amp; trim solenoid for many Johnson \u0026amp; Evinrude outboard applications.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-add-form\"\u003e\u003cform id=\"product_addtocart_form\" action=\"https:\/\/marysvillemarine.com\/checkout\/cart\/add\/uenc\/aHR0cHM6Ly9tYXJ5c3ZpbGxlbWFyaW5lLmNvbS9zb2xlbm9pZC1zaWVycmEtMTgtNTgxNC5odG1s\/product\/214048\/\" method=\"post\" novalidate=\"novalidate\" data-product-sku=\"SIERRA-18-5814\"\u003e\n\u003cdiv class=\"box-tocart\"\u003e\n\u003cdiv class=\"fieldset\"\u003e\n\u003cdiv class=\"field qty\"\u003e\n\u003cul\u003e\n\u003cli\u003eIsolated base\u003c\/li\u003e\n\u003cli\u003e12 volt\u003c\/li\u003e\n\u003cli\u003eReplaces OMC\/Johnson\/Evinrude 581528, 172869 | Replaces Mercury 802139A1, 802139\u003c\/li\u003e\n\u003cli\u003eReplaces Mallory 9-15108\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/form\u003e\u003c\/div\u003e\n\u003ch3\u003e \u003c\/h3\u003e\n\u003ch5\u003eAdditional Information\u003c\/h5\u003e\n\u003ch3\u003eDiscover the Sierra 18-5814 solenoid\u003c\/h3\u003e\n\u003cp\u003eThe Sierra 18-5814 solenoid is a reliable and high-performing component that is essential for many marine applications. It's designed to deliver consistent power to your boat's engine, ensuring smooth operation every time you set sail. Whether you're updating parts or tackling routine maintenance, this solenoid makes for a valuable addition to your marine setup.\u003c\/p\u003e\n\u003ch3\u003eEngine compatibility and durability\u003c\/h3\u003e\n\u003cp\u003eThis particular model of solenoid fits a variety of engines, making it a versatile choice for boating enthusiasts. Engineered with precision, it promises to withstand challenging conditions encountered during marine adventures. Durable materials ensure longevity, reducing the need for frequent replacements and providing peace of mind on the water.\u003c\/p\u003e\n\u003ch3\u003eReliable performance in all conditions\u003c\/h3\u003e\n\u003cp\u003eNo matter where your journey takes you, the Sierra 18-5814 solenoid performs reliably even under extreme conditions. Designed to handle saltwater and exposure to various environmental elements, it supports dependable ignition control crucial for safe boating. Count on this part to contribute significantly to your boat’s functionality.\u003c\/p\u003e\n\u003ch3\u003eSimple installation process explained\u003c\/h3\u003e\n\u003cp\u003eInstalling the Sierra 18-5814 solenoid is straightforward. Even if you're not a seasoned mechanic, you can follow clear instructions typically provided with the product. This simplicity means you can swiftly upgrade your system without prolonged downtimes, getting you back on the water sooner rather than later.\u003c\/p\u003e\n\u003ch3\u003eBuy from MacombMarineParts.com confidently\u003c\/h3\u003e\n\u003cp\u003eWhen shopping at MacombMarineParts.com, enjoy assurance in both product quality and service excellence. By choosing this platform for purchasing the Sierra 18-5814 solenoid, benefit from user-friendly navigation, secure transactions, and knowledgeable customer support ready to assist. Browse now for a stress-free experience tailored to meet boating needs efficiently.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042577764547,"sku":"SIERRA-18-5814","price":28.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Solenoid-Sierra-18-5814-MacombMarineParts_com.jpg?v=1776948989"},{"product_id":"sierra-impeller-for-yamaha-18-3070","title":"Sierra 18-3070 - Yamaha C75, C85 \u0026 90 HP Water Pump Impeller","description":"\u003ch2\u003eSierra 18-3070 - Yamaha C75, C85 \u0026amp; 90 HP Water Pump Impeller\u003c\/h2\u003e\u003cp\u003eFor water-pump service on selected Yamaha C75, C85 and 90 HP outboards, Sierra 18-3070 provides an aftermarket impeller option referenced to Yamaha 688-44352-03-00. The listing also identifies Mallory 9-45603 as a replacement reference. Matching the engine's specified impeller helps keep cooling-system maintenance focused on the correct part, without relying on horsepower alone.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-3070\u003c\/li\u003e\n\u003cli\u003eComponent: Water pump impeller\u003c\/li\u003e\n\u003cli\u003eListed Applications: Selected Yamaha C75, C85 and 90 HP outboard engines\u003c\/li\u003e\n\u003cli\u003eReplaces Yamaha: 688-44352-03-00\u003c\/li\u003e\n\u003cli\u003eReplaces Mallory: 9-45603\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to identify the impeller specified for your Yamaha water pump. Alternatively, send us your engine model and serial number by email, text or live chat, and we'll confirm fitment before you order.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-3070\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: Yamaha 688-44352-03-00\u003c\/li\u003e\n\u003cli\u003eAftermarket Cross-Reference: Mallory 9-45603\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePrefer the original-equipment option? See the \u003ca href=\"\/products\/outboard-impeller-yamaha-688-44352-03-00\"\u003egenuine Yamaha 688-44352-03-00 outboard impeller\u003c\/a\u003e, the OEM reference listed for this Sierra replacement, and verify the application against your engine identification.\u003c\/p\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable Yamaha service manual for impeller installation, water-pump component inspection and cooling-system checks after service.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: Which Yamaha engines are listed for Sierra 18-3070?\u003c\/strong\u003e\u003cbr\u003eA: The listed applications are selected C75, C85 and 90 HP Yamaha outboards. Exact model-year coverage is not established here, so confirm the engine model and serial number before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What Yamaha part number does this impeller replace?\u003c\/strong\u003e\u003cbr\u003eA: Sierra 18-3070 is listed as a replacement for Yamaha 688-44352-03-00; Mallory 9-45603 is also a listed cross-reference.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is this a genuine Yamaha impeller?\u003c\/strong\u003e\u003cbr\u003eA: No. This product is the Sierra aftermarket option. The genuine Yamaha 688-44352-03-00 impeller is a separate catalog listing linked above.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is this a complete water-pump repair kit?\u003c\/strong\u003e\u003cbr\u003eA: This listing identifies the impeller, not a complete pump kit. A housing, wear plate, gaskets and attachment hardware are not confirmed as included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I choose this impeller just because my engine is rated at 90 HP?\u003c\/strong\u003e\u003cbr\u003eA: No. Horsepower alone does not establish compatibility. Match the required impeller reference in the parts diagram for your specific engine model and serial number.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042577895619,"sku":"SIERRA-18-3070","price":27.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Yamaha-Impeller-Sierra-18-3070.jpg?v=1776948991"},{"product_id":"sierra-oil-seal-18-2077","title":"Sierra Oil Seal 18-2077","description":"SIERRA Oil Seal 18-2077","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042577961155,"sku":"SIERRA-18-2077","price":16.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Sierra-Oil-Seal-18-2077.jpg?v=1776948997"},{"product_id":"sierra-o-ring-18-7138","title":"Sierra O Ring 18-7138","description":"SIERRA O RING 18-7138","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042578026691,"sku":"SIERRA-18-7138","price":2.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Sierra-O-Ring-18-7138.jpg?v=1776948999"},{"product_id":"sierra-prop-cone-18-4210","title":"Sierra 18-4210 - Volvo Penta Propeller Cone","description":"\u003ch2\u003eSierra 18-4210 - Volvo Penta Propeller Cone\u003c\/h2\u003e\u003cp\u003eFor propeller-cone replacement on the listed Volvo Penta AQ-series stern drives, Sierra 18-4210 provides an aftermarket alternative referenced to Volvo Penta 850785 and 854045. Also described as a prop cone or spinner, this component should be matched to the drive's propeller assembly and required hardware configuration. The specific drive designations below help narrow the choice without assuming every Volvo Penta drive uses the same cone.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-4210\u003c\/li\u003e\n\u003cli\u003eComponent: Propeller cone \/ prop spinner\u003c\/li\u003e\n\u003cli\u003eListed Volvo Penta Stern Drives: AQ200, 250, 270, 270T, 275, 280, 280T, 280PT and 290\u003c\/li\u003e\n\u003cli\u003eReplaces Volvo Penta: 850785 and 854045\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to identify the cone and associated hardware specified for your propeller assembly. Alternatively, send us your engine model and serial number, along with your drive model and serial number, by email, text or live chat, and we'll confirm fitment before you order.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-4210\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: Volvo Penta 850785 and 854045\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor the original-equipment option, see the \u003ca href=\"\/products\/volvo-prop-cone-spinner-854045\"\u003eVolvo Penta 854045 propeller cone spinner\u003c\/a\u003e. Its catalog listing also identifies 850785 as a replacement reference; check each listing's drive coverage independently rather than extending this Sierra cone's application to additional models.\u003c\/p\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable Volvo Penta stern-drive service manual for the required propeller hardware arrangement, cone installation, locking method and tightening specifications.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: Which Volvo Penta drives are listed for Sierra 18-4210?\u003c\/strong\u003e\u003cbr\u003eA: The listed models are AQ200, 250, 270, 270T, 275, 280, 280T, 280PT and 290. Confirm your exact drive identification and propeller assembly before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which Volvo Penta part numbers does this cone replace?\u003c\/strong\u003e\u003cbr\u003eA: Sierra 18-4210 is listed as an aftermarket replacement for Volvo Penta 850785 and 854045.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is a prop cone the same item as a propeller spinner?\u003c\/strong\u003e\u003cbr\u003eA: Those terms identify this cone-style component in these catalog listings. Terminology alone does not establish compatibility; match the part reference and drive configuration.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Are locking hardware, washers or spacers included?\u003c\/strong\u003e\u003cbr\u003eA: Additional hardware is not confirmed in this listing. Check the parts diagram and the condition of the associated components rather than assuming they are supplied with the cone.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does the OEM 854045 listing's broader model coverage apply to this Sierra cone?\u003c\/strong\u003e\u003cbr\u003eA: Do not assume so. Use the specific Sierra application list and verify the required cone for your drive; additional models listed for a related OEM product are not automatically established for this item.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042578092227,"sku":"SIERRA-18-4210","price":90.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Volvo-Penta-Prop-Cone-Sierra-18-4210.jpg?v=1776949000"},{"product_id":"sierra-oil-passage-seal-quad-ring-18-2944","title":"Sierra 18-2944 - Oil Passage Seal (Quad Ring)","description":"\u003ch2\u003eSierra 18-2944 - Oil Passage Seal (Quad Ring)\u003c\/h2\u003e\u003cp\u003eWhen your parts diagram calls for the oil passage seal referenced to Mercury 26-455771, Sierra 18-2944 offers the quad ring as a separately listed service component. It also replaces Mallory 9-76512. Selecting the specified seal rather than a similar-looking ring helps keep the repair matched to the correct passage and assembly.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-2944\u003c\/li\u003e\n\u003cli\u003eComponent: Oil passage seal, also described as a quad ring\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury: 26-455771\u003c\/li\u003e\n\u003cli\u003eReplaces Mallory: 9-76512\u003c\/li\u003e\n\u003cli\u003eRelated Service Kit: Sierra 18-3517 lists 18-2944 among its seal components\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to identify the oil passage seal required for your assembly. Alternatively, send us your engine model and serial number by email, text or live chat, and we'll confirm fitment before you order; include the drive model and serial number for stern-drive applications.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-2944\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: Mercury 26-455771\u003c\/li\u003e\n\u003cli\u003eAftermarket Cross-Reference: Mallory 9-76512\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor a broader pump-service job, compare the \u003ca href=\"\/products\/water-pump-repair-kit-mercruiser-sierra-18-3517\"\u003eSierra 18-3517 upper-housing water-pump repair kit\u003c\/a\u003e, which explicitly lists an 18-2944 seal. Confirm the kit's application independently; its contents do not establish universal fitment for this individual ring.\u003c\/p\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable Mercury or Mercruiser service manual for the seal's correct passage location, seating requirements and specified assembly procedures.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: What is Sierra 18-2944 used for?\u003c\/strong\u003e\u003cbr\u003eA: It is listed as an oil passage seal, also called a quad ring. Identify the exact seal position in the parts diagram for your engine or drive assembly before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which part numbers does it replace?\u003c\/strong\u003e\u003cbr\u003eA: The listed replacement references are Mercury 26-455771 and Mallory 9-76512.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I substitute a general-purpose O-ring of a similar size?\u003c\/strong\u003e\u003cbr\u003eA: This listing does not establish interchangeability with a general-purpose O-ring or provide dimensions and material specifications for selecting a substitute. Use the specified seal reference for your assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is this the complete Sierra 18-3517 repair kit?\u003c\/strong\u003e\u003cbr\u003eA: No. This listing is for the individual oil passage seal. The separately listed 18-3517 kit contains an 18-2944 seal along with additional pump-service components.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does inclusion in the 18-3517 kit confirm it fits my drive?\u003c\/strong\u003e\u003cbr\u003eA: Not by itself. Check the required seal number and assembly diagram using your model and serial number; confirm any complete kit's fitment separately.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042578321603,"sku":"SIERRA-18-2944","price":0.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Oil-Passage-Seal-Quad-Ring-Sierra-18-2944.jpg?v=1776949008"},{"product_id":"distributor-cap-prestolite-v6-screw-down-sierra-18-5353","title":"Sierra 18-5353 - Prestolite V6 Screw-Down Distributor Cap","description":"\u003ch2\u003eSierra 18-5353 - Prestolite V6 Screw-Down Distributor Cap\u003c\/h2\u003e\u003cp\u003eFor ignition service on a V6 Prestolite distributor with a two-screw cap attachment, Sierra 18-5353 offers a separately listed replacement cap. Its screw-down mounting style is the key selection detail: engine brand or cylinder count alone does not establish the correct distributor cap. Listed replacement references span Crusader, OMC, Volvo Penta and Mercury Marine\/Mercruiser applications using the specified cap.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-5353\u003c\/li\u003e\n\u003cli\u003eComponent: Distributor cap\u003c\/li\u003e\n\u003cli\u003eDistributor Type: Prestolite V6\u003c\/li\u003e\n\u003cli\u003eAttachment: Two screws secure the cap to the distributor housing\u003c\/li\u003e\n\u003cli\u003eReplaces Crusader: 41069\u003c\/li\u003e\n\u003cli\u003eReplaces OMC: 984398\u003c\/li\u003e\n\u003cli\u003eReplaces Volvo Penta: 841926\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury Marine\/Mercruiser: 392-9086 and 392-9086T\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to identify the distributor and cap specified for your engine. Alternatively, send us your engine model and serial number by email, text or live chat, and we'll confirm fitment before you order; include the distributor identification if it has been changed from the original equipment.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-5353\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: Crusader 41069; OMC 984398; Volvo Penta 841926; Mercury Marine\/Mercruiser 392-9086 and 392-9086T\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eServicing more than the cap? The \u003ca href=\"\/products\/tune-up-kit-prestolite-v6-screw-down-cap-sierra-18-5276\"\u003eSierra 18-5276 Prestolite V6 screw-down-cap tune-up kit\u003c\/a\u003e lists this 18-5353 cap together with an 18-5403 rotor, 18-5303 points and 18-5347 condenser. That kit is specified for single-point Prestolite V6 distributors; confirm the complete kit's compatibility independently.\u003c\/p\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable engine and distributor service manual for cap attachment, ignition-lead identification and any inspection or ignition checks required during replacement.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: How is Sierra 18-5353 attached to the distributor?\u003c\/strong\u003e\u003cbr\u003eA: It is listed for V6 Prestolite distributors that use two screws to secure the cap to the housing; do not assume compatibility with a clip-retained cap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which OEM distributor caps does it replace?\u003c\/strong\u003e\u003cbr\u003eA: The listed references are Crusader 41069, OMC 984398, Volvo Penta 841926, and Mercury Marine\/Mercruiser 392-9086 and 392-9086T.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Will it fit any V6 marine engine?\u003c\/strong\u003e\u003cbr\u003eA: No. The engine must use the compatible Prestolite distributor and two-screw cap configuration. An engine with a replacement distributor may require a different cap even if the engine brand matches a listed reference.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does this listing include a rotor, points and condenser?\u003c\/strong\u003e\u003cbr\u003eA: Those components are not established as included with this separately listed cap. The related 18-5276 tune-up kit explicitly lists the cap, rotor, points and condenser for its specified single-point distributor application.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Are the two mounting screws supplied with the cap?\u003c\/strong\u003e\u003cbr\u003eA: The listing confirms the two-screw attachment style but does not confirm that mounting screws are included. Verify the required hardware for your distributor before service.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042578682051,"sku":"SIERRA-18-5353","price":41.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Distributor-Cap-Prestolite-V6-Screw-Down-Sierra-18-5353.jpg?v=1776949011"},{"product_id":"sierra-lower-gearcase-seal-kit-cobra-18-2671","title":"Lower Gearcase Seal Kit | Sierra 18-2671","description":"\u003ch2\u003eLower Gearcase Seal Kit | Sierra 18-2671\u003c\/h2\u003e\n\u003cp\u003eLower Gearcase Seal Kit | Sierra 18-2671\u003c\/p\u003e\n\u003cp\u003eLower Gearcase Seal Kit\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOMC Cobra Lower Gearcase Seal Kit\u003c\/li\u003e\n\u003cli\u003eFor 4 cylinder OMC Cobra drives from 1986-89\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury 802419\u003c\/li\u003e\n\u003cli\u003eReplaces OMC 985612\u003c\/li\u003e\n\u003cli\u003eReplaces Mallory 9-74401\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042578747587,"sku":"SIERRA-18-2671","price":43.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Lower-Gearcase-Seal-Kit-Sierra-18-2671.jpg?v=1776949012"},{"product_id":"sierra-o-ring-18-7158","title":"Sierra O-Ring 18-7158","description":"SIERRA O-Ring 18-7158","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042579140803,"sku":"SIERRA-18-7158","price":0.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Sierra-O-Ring-18-7158.jpg?v=1776949015"},{"product_id":"sierra-o-ring-18-7178","title":"Sierra 18-7178 - O-Ring","description":"\u003ch2\u003eSierra 18-7178 - O-Ring\u003c\/h2\u003e\u003cp\u003eWhen your assembly's parts reference specifies Sierra 18-7178, this separately listed O-ring provides a focused seal-replacement option. Order by the required part number rather than appearance: the source listing does not identify a particular engine family, seal location or dimensional specification. Confirming those details before purchase helps avoid choosing a similar-looking ring intended for a different assembly.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-7178\u003c\/li\u003e\n\u003cli\u003eComponent: O-ring\u003c\/li\u003e\n\u003cli\u003eSelection Reference: Sierra 18-7178; confirm the required seal against the applicable parts diagram\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to identify the O-ring required for your assembly. Alternatively, send us your engine model and serial number by email, text or live chat, and we'll confirm fitment before you order; include the drive model and serial number if the seal is for a stern-drive assembly.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-7178\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable engine or drive service manual for the correct seal location, preparation requirements and assembly specifications.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: What are the inside diameter and cross-section of Sierra 18-7178?\u003c\/strong\u003e\u003cbr\u003eA: Those dimensions are not provided in this listing. Confirm the required part number rather than selecting this seal by an assumed size.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What material is the O-ring made from?\u003c\/strong\u003e\u003cbr\u003eA: The material is not established in the source product details, so a specific elastomer or fluid-resistance rating is not claimed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which engine or drive does it fit?\u003c\/strong\u003e\u003cbr\u003eA: A specific engine or drive application is not established here. Send us the model, serial number and seal location by email, text or live chat so we can verify the required part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does Sierra 18-7178 replace an OEM part number?\u003c\/strong\u003e\u003cbr\u003eA: No OEM replacement reference is confirmed in this listing. Check the applicable parts diagram or contact us before treating it as a substitute for another numbered seal.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is this a complete seal kit?\u003c\/strong\u003e\u003cbr\u003eA: This listing identifies an O-ring, not a complete seal kit. Additional seals or service components are not confirmed as included.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042579173571,"sku":"SIERRA-18-7178","price":4.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Sierra-O-Ring-18-7178.jpg?v=1776949017"},{"product_id":"sierra-oil-seal-18-2023","title":"Sierra Oil Seal 18-2023","description":"SIERRA Oil Seal 18-2023","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042579206339,"sku":"SIERRA-18-2023","price":18.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Sierra-Oil-Seal-18-2023.jpg?v=1776949018"},{"product_id":"sierra-seal-ring-18-2526","title":"Sierra 18-2526 - Volvo Penta Circulation Pump Seal Ring","description":"\u003ch2\u003eSierra 18-2526 - Volvo Penta Circulation Pump-to-Cylinder-Head Seal Ring\u003c\/h2\u003e\u003cp\u003eFor service at the circulation-pump-to-cylinder-head connection on Volvo Penta AQ165A and AQ170A, AQ170B and AQ170C engines, Sierra 18-2526 provides a separately listed seal ring. It replaces Volvo Penta 430172 where specified. Identifying this connection before ordering helps distinguish the required ring from other cooling-system seals on the engine.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-2526\u003c\/li\u003e\n\u003cli\u003eComponent: Seal ring\u003c\/li\u003e\n\u003cli\u003eService Position: Circulation pump to cylinder head\u003c\/li\u003e\n\u003cli\u003eListed Volvo Penta Engines: AQ165A, AQ170A, AQ170B and AQ170C\u003c\/li\u003e\n\u003cli\u003eReplaces Volvo Penta: 430172\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to identify the seal at the circulation-pump-to-cylinder-head connection. Alternatively, send us your engine model and serial number by email, text or live chat, and we'll confirm fitment before you order.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-2526\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: Volvo Penta 430172\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable Volvo Penta engine service manual for seal seating, mating-surface preparation and circulation-pump assembly specifications.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: Where is Sierra 18-2526 used?\u003c\/strong\u003e\u003cbr\u003eA: It is listed for the circulation-pump-to-cylinder-head connection, not as a general replacement for every seal in the cooling system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which Volvo Penta engine models are listed?\u003c\/strong\u003e\u003cbr\u003eA: The listed models are AQ165A, AQ170A, AQ170B and AQ170C. Confirm your exact model and serial number before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which original seal does it replace?\u003c\/strong\u003e\u003cbr\u003eA: Sierra 18-2526 is listed as a replacement for Volvo Penta 430172.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I select this ring by diameter alone?\u003c\/strong\u003e\u003cbr\u003eA: Dimensions and material are not provided in this listing. Match the specified part reference and connection in your engine's parts diagram rather than assuming a similar-sized seal is interchangeable.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is a circulation pump included?\u003c\/strong\u003e\u003cbr\u003eA: This listing identifies the seal ring only; a pump or additional cooling-system components are not established as included.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042579370179,"sku":"SIERRA-18-2526","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Seal-Ring-Sierra-18-2526.jpg?v=1776949019"},{"product_id":"sierra-oil-filter-18-7921","title":"Sierra 18-7921 - Oil Filter, 24 mm x 1.5 Thread","description":"\u003ch2\u003eSierra 18-7921 - Oil Filter, 24 mm × 1.5 Thread\u003c\/h2\u003e\u003cp\u003eFor an oil change requiring Mercury 35-896546T, 35-877767K01 or 35-877767Q01, Sierra 18-7921 provides an aftermarket replacement filter with a listed 24 mm × 1.5 thread. The replacement references make it easier to match the filter specified for your engine, while the thread specification offers an additional identification check. Confirm the engine application before ordering rather than relying on thread size alone.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-7921\u003c\/li\u003e\n\u003cli\u003eComponent: Oil filter\u003c\/li\u003e\n\u003cli\u003eThread Specification: 24 mm × 1.5\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury: 35-896546T, 35-877767K01 and 35-877767Q01\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to identify the oil filter specified for your engine. Alternatively, send us your engine model and serial number by email, text or live chat, and we'll confirm fitment before you order.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-7921\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: Mercury 35-896546T, 35-877767K01 and 35-877767Q01\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor the Quicksilver option corresponding to one of these references, compare the \u003ca href=\"\/products\/outboard-oil-filter-quicksilver-35-877767q01\"\u003eQuicksilver 35-877767Q01 outboard oil filter\u003c\/a\u003e. Verify the filter required by your engine's model and serial number before choosing either listing.\u003c\/p\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable engine service manual for oil-filter replacement, sealing-surface preparation, tightening requirements and post-service oil-level and leak checks.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: What thread size does Sierra 18-7921 use?\u003c\/strong\u003e\u003cbr\u003eA: The listed thread specification is 24 mm × 1.5. Matching the thread alone does not establish complete filter compatibility.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which Mercury oil filters does it replace?\u003c\/strong\u003e\u003cbr\u003eA: The listed replacement references are Mercury 35-896546T, 35-877767K01 and 35-877767Q01.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does this fit every Mercury four-stroke engine?\u003c\/strong\u003e\u003cbr\u003eA: Universal Mercury four-stroke fitment is not established. Match your engine's specified filter reference using its model and serial number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is this a Sierra filter or a Quicksilver filter?\u003c\/strong\u003e\u003cbr\u003eA: This product is the Sierra 18-7921 aftermarket filter. Quicksilver 35-877767Q01 is a separate catalog option linked above.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What are its micron rating and bypass-valve specifications?\u003c\/strong\u003e\u003cbr\u003eA: Those specifications are not provided in this listing. Select by the verified replacement reference and confirmed engine application rather than assuming filtration or valve specifications.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042579468483,"sku":"SIERRA-18-7921","price":10.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Oil-Filter-Sierra-18-7921.jpg?v=1776949023"},{"product_id":"sierra-lanyard-mp28880","title":"Sierra MP28880 - Johnson \u0026 Evinrude Cut-Off Lanyard, Pre-1995","description":"\u003ch2\u003eSierra MP28880 - Johnson \u0026amp; Evinrude Emergency Cut-Off Lanyard, Pre-1995\u003c\/h2\u003e\u003cp\u003eFor a pre-1995 OMC, Johnson or Evinrude installation requiring lanyard reference 432230, Sierra MP28880 provides the replacement emergency cut-off lanyard without purchasing a switch assembly. Match it to the installed cut-off switch as well as the engine identification, particularly if the controls or switch have been replaced. This listing is for the lanyard only; the switch is not included.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: MP28880\u003c\/li\u003e\n\u003cli\u003eComponent: Emergency engine cut-off lanyard\u003c\/li\u003e\n\u003cli\u003eListed Applications: Pre-1995 OMC, Johnson and Evinrude engines\u003c\/li\u003e\n\u003cli\u003eReplaces OMC\/Johnson\/Evinrude: 432230\u003c\/li\u003e\n\u003cli\u003eContents: Lanyard only; cut-off switch not included\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to identify the correct lanyard for your cut-off switch. Alternatively, send us your engine model and serial number by email, text or live chat, and we'll confirm fitment before you order; include the installed switch or control identification if it differs from the original equipment.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: MP28880\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: OMC\/Johnson\/Evinrude 432230\u003c\/li\u003e\n\u003cli\u003eKit Contents: Lanyard only; switch excluded\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable engine or control service manual for lanyard attachment, cut-off-switch compatibility and the specified functional check before operation.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: Does pre-1995 fitment include a 1995 engine?\u003c\/strong\u003e\u003cbr\u003eA: No. The listed range is before 1995; compatibility with a 1995 or later engine is not established by this listing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is the emergency cut-off switch included?\u003c\/strong\u003e\u003cbr\u003eA: No. Sierra MP28880 is the replacement lanyard only, not a complete switch-and-lanyard assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which original lanyard does MP28880 replace?\u003c\/strong\u003e\u003cbr\u003eA: It is listed as a replacement for OMC\/Johnson\/Evinrude 432230. Confirm the reference required by the installed switch before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What if my boat has a replacement switch or different controls?\u003c\/strong\u003e\u003cbr\u003eA: Engine brand and year alone may not identify the lanyard required by a changed installation. Verify the switch or control identification and its specified lanyard rather than forcing a mismatched connector.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Should the cut-off system be checked after replacing the lanyard?\u003c\/strong\u003e\u003cbr\u003eA: Follow the applicable manual's functional-check procedure before operation. If the system does not operate as specified, have the fault corrected rather than bypassing the cut-off switch.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042579534019,"sku":"SIERRA-MP28880","price":13.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Johnson-Evinrude-Lanyard-Sierra-MP28880.jpg?v=1776949024"},{"product_id":"cdi-omc-rectifier-regulator-35-amp-193-6048","title":"Sierra 18-99394 - Johnson \u0026 Evinrude 35 Amp Rectifier\/Regulator","description":"\u003ch2\u003eSierra 18-99394 - Johnson \u0026amp; Evinrude 35 Amp Rectifier\/Regulator\u003c\/h2\u003e\u003cp\u003eWhen servicing a Johnson or Evinrude charging system previously specified for CDI Electronics 193-6048, Sierra 18-99394 is the superseding replacement. This 35-amp rectifier\/regulator carries forward the replacement application associated with OMC 586048 and 586075. The former CDI number is retained here to help identify the correct replacement, not to indicate that the supplied part is CDI-branded.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-99394\u003c\/li\u003e\n\u003cli\u003eComponent: Rectifier\/regulator\u003c\/li\u003e\n\u003cli\u003eCharging-System Rating: 35 amps\u003c\/li\u003e\n\u003cli\u003eApplications: Selected Johnson\/Evinrude outboard charging systems; verify model and serial number\u003c\/li\u003e\n\u003cli\u003eSupersedes: CDI Electronics 193-6048\u003c\/li\u003e\n\u003cli\u003eOMC Replacement References: 586048 and 586075\u003c\/li\u003e\n\u003cli\u003eRelated Sierra Replacement References: 18-5829 and 18-5830\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to identify the rectifier\/regulator specified for your charging system. Alternatively, send us your engine model and serial number by email, text or live chat, and we'll confirm fitment before you order; include the installed component number if the charging system has been changed.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-99394\u003c\/li\u003e\n\u003cli\u003eSuperseded Part: CDI Electronics 193-6048\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: OMC 586048 and 586075\u003c\/li\u003e\n\u003cli\u003eAftermarket Cross-Reference: Sierra 18-5829 and 18-5830\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable engine service manual and the instructions supplied with Sierra 18-99394 for diagnosis, wiring identification, mounting and post-installation checks.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: Will I receive Sierra 18-99394 or CDI 193-6048?\u003c\/strong\u003e\u003cbr\u003eA: This listing now represents Sierra 18-99394, the superseding replacement for CDI Electronics 193-6048.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Why is the old CDI number still mentioned?\u003c\/strong\u003e\u003cbr\u003eA: CDI 193-6048 is retained as a superseded-part reference so you can match a previous part number to the current Sierra replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which OMC references are associated with this replacement?\u003c\/strong\u003e\u003cbr\u003eA: The established replacement references are OMC 586048 and 586075. Confirm the specified component for your engine and installed charging system before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does any 35-amp Johnson or Evinrude system use this part?\u003c\/strong\u003e\u003cbr\u003eA: No universal fitment is established. Match the engine model, serial number and required replacement reference rather than selecting by amperage alone.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does supersession make this a charging-system upgrade?\u003c\/strong\u003e\u003cbr\u003eA: No. It identifies the replacement for the specified application, not an approved conversion for a different charging system. Diagnose charging faults and follow the applicable service information before replacement.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042581565635,"sku":"SIERRA-18-99394","price":286.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Rectifier-CDI-Electronics-193-6048.jpg?v=1776949027"},{"product_id":"sierra-pump-liner-18-3145","title":"Sierra Pump Liner 18-3145","description":"SIERRA Pump Liner 18-3145","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042581631171,"sku":"SIERRA-18-3145","price":4.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Sierra-Pump-Liner-18-3145.jpg?v=1776949029"},{"product_id":"sierra-lower-gearcase-seal-kit-18-8359","title":"Volvo Penta Lower Gearcase Seal Kit | Sierra 18-8359","description":"\u003cp\u003eVolvo Penta Lower Gearcase Seal Kit | Sierra 18-8359\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVolvo Penta Lower Gearcase Seal Kit\u003c\/li\u003e\n\u003cli\u003eFor Volvo Penta AQ200-290 model stern drives\u003c\/li\u003e\n\u003cli\u003eReplaces Volvo Penta 876268\u003c\/li\u003e\n\u003cli\u003eReplaces Mallory 9-77904\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042581860547,"sku":"SIERRA-18-8359","price":173.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Volvo-Penta-Lower-Gearcase-Seal-Kit-Sierra-18-8359.jpg?v=1776949032"},{"product_id":"base-gasket-powerhead-sierra-18-0904","title":"Base Gasket Powerhead | Sierra 18-0904","description":"\u003cp\u003eSierra Powerhead Base Gasket 18-0904\u003c\/p\u003e\n\u003ch2\u003eBase Gasket Powerhead | Sierra 18-0904\u003c\/h2\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042581893315,"sku":"SIERRA-18-0904","price":7.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Base-Gasket-Powerhead-Sierra-18-0904.jpg?v=1776949035"},{"product_id":"sierra-spark-plug-wire-kit-18-5225","title":"Sierra 18-5225 - Spark Plug Wire Kit, 7 mm Metallic Core, 25 ft","description":"\u003ch2\u003eSierra 18-5225 - Spark Plug Wire Kit, 25 ft of 7 mm Metallic-Core Wire\u003c\/h2\u003e\u003cp\u003eFor ignition-wire work that requires lengths tailored to the installation, Sierra 18-5225 combines a 25-foot roll of 7 mm Hypalon ignition wire with an assortment of three different end-fitting types. The metallic-core wire and separate fittings provide an alternative to choosing a pre-cut set, provided the ignition system permits this wire construction and the included fittings match the connections. Check those requirements before selecting the kit, rather than relying on wire diameter alone.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-5225\u003c\/li\u003e\n\u003cli\u003eProduct: Spark plug wire assembly kit\u003c\/li\u003e\n\u003cli\u003eWire Length: 25 ft total roll\u003c\/li\u003e\n\u003cli\u003eWire Diameter: 7 mm\u003c\/li\u003e\n\u003cli\u003eWire Construction: Metallic core with Hypalon insulation\u003c\/li\u003e\n\u003cli\u003eEnd Fittings: Assortment of three different types; individual styles and quantities are not specified\u003c\/li\u003e\n\u003cli\u003eFitment Requirements: Compatible ignition-wire construction, terminal types and sufficient length for the intended routing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to identify the ignition-wire connections for your engine. Alternatively, send us your engine model and serial number by email, text or live chat, and we'll confirm fitment before you order; include ignition-system identification if it differs from the original equipment.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-5225\u003c\/li\u003e\n\u003cli\u003eKit Contents: 25 ft roll of 7 mm Hypalon metallic-core ignition wire and an assortment of three different end-fitting types\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable engine and ignition-system service manual for approved wire construction, terminal assembly, routing and final checks.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: Is this a pre-cut, engine-specific spark plug wire set?\u003c\/strong\u003e\u003cbr\u003eA: No. The listed contents are a 25-foot wire roll and separate end fittings, allowing lengths to be prepared for a compatible installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is the wire metallic-core or suppression-core?\u003c\/strong\u003e\u003cbr\u003eA: It is listed as metallic-core wire. Do not assume it meets an ignition system's suppression-wire requirements; verify the specified construction before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What does the 25-foot measurement cover?\u003c\/strong\u003e\u003cbr\u003eA: It is the total length of the supplied roll, not the length of each finished lead. The number of leads you can prepare depends on their required lengths and routing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Which terminal styles and quantities are included?\u003c\/strong\u003e\u003cbr\u003eA: The source identifies an assortment of three end-fitting types but does not specify the individual styles or counts. Confirm the connections required by your ignition system before selecting the kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Will 7 mm diameter alone establish fitment?\u003c\/strong\u003e\u003cbr\u003eA: No. The required core construction, terminal connections and available wire length must also suit the installation; this kit is not established as universal for every marine ignition system.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042583007427,"sku":"SIERRA-18-5225","price":36.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Spark-Plug-Wire-Kit-Sierra-18-5225.jpg?v=1776949037"},{"product_id":"sierra-pump-case-gasket-18-0483","title":"Sierra Pump Case Gasket 18-0483","description":"SIERRA Pump Case Gasket 18-0483","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042583236803,"sku":"SIERRA-18-0483","price":2.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Sierra-Pump-Case-Gasket-18-0483.jpg?v=1776949039"},{"product_id":"sierra-push-rod-cover-gasket-18-2815","title":"Sierra Push Rod Cover Gasket 18-2815","description":"SIERRA Push Rod Cover Gasket 18-2815","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042583302339,"sku":"SIERRA-18-2815","price":28.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Sierra-Push-Rod-Cover-Gasket-18-2815.jpg?v=1776949041"},{"product_id":"sierra-oil-seal-18-2061","title":"Oil Seal  | Sierra 18-2061","description":"\u003cp\u003eOil Seal  | Sierra 18-2061\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOil Seal\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury 802066\u003c\/li\u003e\n\u003cli\u003eReplaces OMC\/Johnson\/Evinrude 329922\u003c\/li\u003e\n\u003cli\u003eReplaces 9-76219\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042583335107,"sku":"SIERRA-18-2061","price":8.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Oil-Seal-Sierra-18-2061.jpg?v=1776949043"},{"product_id":"sierra-molded-hose-18-70927","title":"Molded Hose | Sierra 18-70927","description":"\u003ch2\u003eMolded Hose | Sierra 18-70927\u003c\/h2\u003e\n\u003ch2\u003eSIERRA Molded Hose 18-70927\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMolded Hose\u003c\/li\u003e\n\u003cli\u003eReplaces 32-73795\u003c\/li\u003e\n\u003cli\u003eFor 5.0L and 5.7L port\u003c\/li\u003e\n\u003cli\u003eFor thermostat housing to port manifold\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042583400643,"sku":"SIERRA-18-70927","price":25.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Molded-Hose-Sierra-18-70927.jpg?v=1776949046"},{"product_id":"sierra-lower-unit-seal-kit-for-chrysler-force-18-2697-1","title":"Sierra 18-2697-1 - Chrysler Force Lower Unit Seal Kit","description":"\u003ch2\u003eSierra 18-2697-1 - Chrysler Force Lower Unit Seal Kit\u003c\/h2\u003e\u003cp\u003eFor seal service on a compatible Chrysler or Force gearcase, Sierra 18-2697-1 brings together four listed oil seals, a water tube seal, washers, a water pump base and an O-ring. It replaces Mercury 26-41365A3 and supersedes Sierra 18-2697, providing clear reference numbers for matching an earlier kit to the current part. Confirm the gearcase application before ordering; the Chrysler\/Force designation alone does not establish fitment across every engine.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-2697-1\u003c\/li\u003e\n\u003cli\u003eKit Type: Lower unit seal kit\u003c\/li\u003e\n\u003cli\u003eListed Application: Chrysler\/Force lower units; verify the specific gearcase\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury: 26-41365A3\u003c\/li\u003e\n\u003cli\u003eSupersedes Sierra: 18-2697\u003c\/li\u003e\n\u003cli\u003eOil Seals Included: 18-0581, 18-0584, 18-0585 and 18-0586\u003c\/li\u003e\n\u003cli\u003eWater Tube Seal Included: 18-2728-1\u003c\/li\u003e\n\u003cli\u003eWashers Included: 18-2945 and 18-4261\u003c\/li\u003e\n\u003cli\u003eWater Pump Base Included: 18-3149-1\u003c\/li\u003e\n\u003cli\u003eO-Ring Included: 18-7162\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to identify the seal kit specified for your lower unit. Alternatively, send us your engine model and serial number by email, text or live chat, and we'll confirm fitment before you order; let us know if the lower unit has been replaced with a different assembly.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-2697-1\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: Mercury 26-41365A3\u003c\/li\u003e\n\u003cli\u003ePrevious Sierra Part Number: 18-2697\u003c\/li\u003e\n\u003cli\u003eKit Contents: Oil seals 18-0581, 18-0584, 18-0585 and 18-0586; water tube seal 18-2728-1; washers 18-2945 and 18-4261; water pump base 18-3149-1; O-ring 18-7162\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable engine and gearcase service manual for disassembly, seal orientation, component inspection, reassembly and specified sealing checks.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: Does 18-2697-1 replace the earlier Sierra 18-2697 kit?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The listed supersession is from Sierra 18-2697 to 18-2697-1; use the current full part number when ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What is the Mercury replacement reference?\u003c\/strong\u003e\u003cbr\u003eA: Sierra 18-2697-1 is listed as replacing Mercury 26-41365A3. Match that reference to the parts information for your gearcase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is the water pump base included?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The listed contents include water pump base 18-3149-1 and water tube seal 18-2728-1, alongside the oil seals, washers and O-ring.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is this a complete gearcase rebuild or water pump kit?\u003c\/strong\u003e\u003cbr\u003eA: It is a lower unit seal kit with the components listed above. An impeller, gears and bearings are not listed among its contents; do not treat it as a complete mechanical rebuild or impeller-service package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Will it fit any Chrysler or Force outboard?\u003c\/strong\u003e\u003cbr\u003eA: Universal coverage is not established. Verify the engine identification and actual lower-unit assembly, especially if the gearcase has been changed; specific horsepower, model-year and serial-number ranges are not supplied in this listing.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042583466179,"sku":"SIERRA-18-2697-1","price":46.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Lower-Unit-Seal-Kit-Sierra-18-2697-1.jpg?v=1776949049"},{"product_id":"sierra-thermostat-gasket-23-0801","title":"Sierra Thermostat Gasket 23-0801","description":"SIERRA Thermostat Gasket 23-0801","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042583498947,"sku":"SIERRA-23-0801","price":2.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Sierra-Thermostat-Gasket-23-0801.jpg?v=1776949050"},{"product_id":"oil-filter-sierra-18-7884","title":"Oil Filter | Sierra 18-7884","description":"\u003ch2\u003eOil Filter | Sierra 18-7884\u003c\/h2\u003e\n\u003cp\u003eOil Filter | Sierra 18-7884\u003c\/p\u003e\n\u003cp\u003eSIERRA Oil Filter | 18-7884\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOil Filter\u003c\/li\u003e\n\u003cli\u003eFits Volvo diesel engines\u003c\/li\u003e\n\u003cli\u003eReplaces Universal 200224, 299381 | Replaces Volvo Penta 834337\u003c\/li\u003e\n\u003cli\u003eReplaces Mallory 9-57911\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eAdditional Information\u003c\/h5\u003e\n\u003cp\u003eSierra has a 56-year history as a top global producer of marine industry aftermarket engine and drive parts. In 2022, we broadened the SIERRA brand's appeal to encompass a variety of items for the aftermarket boating industry in addition to items for use on land.\u003c\/p\u003e\n\u003cp\u003eIn addition to the extensive maritime brands formerly known as Shields and Moeller, the SIERRA brand includes the whole SIERRA Marine product ranges. The Prime Line brand for ATV\/UTV and outdoor power equipment markets, as well as additional aftermarket parts and accessories for land-based applications, will also fall under the new SIERRA Brand umbrella.\u003c\/p\u003e\n\u003cp\u003eThe SIERRA name is synonymous with high-quality, time-tested aftermarket goods that are backed by the best customer service and support in the market throughout all land and maritime markets. To anticipate and address client needs, we are always developing new products and technology.\u003c\/p\u003e\n\u003cp\u003eBeing in charge of your ship means having all the information at your fingertips. We have what you need to stay in control, whether you're determining wind direction, speed, or water depth.\u003c\/p\u003e\n\u003cp\u003eWithout a well working engine, there is no adventure on the water. Stock up on all the parts you'll need to keep yours running smoothly and conserving fuel so you can relax and enjoy the water.\u003c\/p\u003e\n\u003cp\u003eWe take giving the appropriate gear for the job seriously since we know how serious you are about maintaining your vessel to keep it in top condition. Browse our selection of products to easily complete any repairs or assembly.\u003c\/p\u003e\n\u003cp class=\"ef eg eh ei ej ek el\"\u003eSierra  marine products that are engineered to surpass today’s high horsepower engine demands and stand up to the harsh marine environment. All marine products both meet or exceed the original equipment part it replaces.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042583630019,"sku":"SIERRA-18-7884","price":15.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Oil-Filter-Sierra-18-7884.jpg?v=1776949054"},{"product_id":"oil-filter-sierra-marine-18-7916","title":"Oil Filter | Sierra Marine 18-7916","description":"\u003ch2\u003eOil Filter | Sierra Marine 18-7916\u003c\/h2\u003e\n\u003cp\u003eOil Filter | Sierra Marine 18-7916\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOil Filter\u003c\/li\u003e\n\u003cli\u003eThread Spec: 3\/4 in. x 16 NPT\u003c\/li\u003e\n\u003cli\u003eReplaces oil filter Johnson\/Evinrude 434839\u003c\/li\u003e\n\u003cli\u003eReplaces Mallory 9-57813\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eAdditional Information\u003c\/h5\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/s187916_lg_50x50.jpg?v=1714569576\" alt=\"Oil Filter 18-7916\" width=\"50\" height=\"50\"\u003e\u003c\/div\u003e\n\u003cp\u003eSIERRA has a 58-year history as a leading global manufacturer of aftermarket engine and drive parts for the marine industry. In 2022, we expanded the scope of the SIERRA brand to include a wide range of products for the aftermarket boating business, as well as products for land-based applications.\u003c\/p\u003e\n\u003cp\u003eThe SIERRA brand encompasses the full SIERRA Marine product lines, as well as expansive marine brands formerly known as Shields and Moeller. The new SIERRA Brand umbrella will also include the Prime Line brand for ATV\/UTV and outdoor power equipment markets, along with additional aftermarket parts and accessories for land-based applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA\u003c\/strong\u003e \u003cstrong\u003eGlobal Brand\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn all markets for land and sea, the SIERRA brand stands for time-proven aftermarket products, built with quality and backed by the industry’s leading customer support and service. We are continuously innovating new products and technologies to anticipate and solve customer needs.\u003c\/p\u003e\n\u003cp\u003eOne of the most important aspects of owning a boat is keeping the engine well-maintained. Whether you own a new Mercury® Outboard or an old OMC® Sterndrive, Sierra Marine offers a vast selection of boat parts to keep you moving. A properly running engine is essential for a safe and enjoyable boating experience. Luckily, with a little bit of regular care, it's easy to keep your boat engine in good shape.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA FEW THINGS TO KEEP AN EYE ON:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFUEL LINES\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCheck your boat's fuel lines regularly for cracks, leaks or other damage. Today's fuel can be hard on fuel systems. Regular checks can ensure that you do not run into any issues when you least expect them. If you notice any damage, replace the fuel line immediately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePRIMER BULBS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eCheck the primer bulbs on your engine before each use. Similar to fuel lines, primer bulbs may suffer from exposure to Ethanol based fuel. A quick replacement of an old primer bulb is a simple way to eliminate any potential problems. If the bulb is hard or cracked, replace it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFUEL FILTERS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt's also important to check and replace your fuel filters regularly. Clogged or dirty fuel filters can cause all sorts of problems, including reduced engine power and poor fuel economy. Fuel water separating filters take engine protection to another level by removing water deposits that might enter the fuel system. Sierra's fuel water separating filters are a perfect solution for a fuel filter replacement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSPARK PLUGS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eInspect your spark plugs yearly and clean or replace them as needed. Carbon build up on the electrodes limit the spark plug's ability to efficiently produce a spark. This could cause you to experience reduced gas mileage, poor acceleration, hard starts, engine misfires and rough idling. Checking your plugs in the spring to ensure they are ready for boating season and can possibly help identify hidden problems within your engine. This is an important step in keeping your engine running at peak performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOIL\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOne of the most important things you can do for your boat engine is to change the oil and oil filter regularly. Check the oil level in your engine every time you take the boat out for the day. If it's low, add more oil. Also, keep an eye on oil quality. Using a high quality engine oil offered on sierraparts.com you can be sure that you are giving your engine the best protection against the harsh marine environment. If the appearance of the oil turns milky in color, this could indicate that you have water intrusion into your engine and should be addressed immediately. Be sure to check your owner's manual to find out what type of oil is best for your engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGEAR LUBE\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAnother important aspect of boat engine maintenance is changing the gear lube. Your lower unit has several gears that rely on quality gear lubes to minimize friction and overheating. Over time, lower units can become susceptible to leaks and allow water to enter, and mix with the gear lube. This will greatly reduce the gear lube's ability to maintain proper lubrication and protect your gears from damage. Regular inspection can help you identify leaks early and reduce repair costs. This should be done according to the manufacturer's recommendations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBATTERY\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBoat batteries are essential for starting your engine and powering accessories. Most marine batteries are lead-acid batteries and require special care. Check the battery regularly for corrosion on the terminals, which can be cleaned with a mixture of water and baking soda. If the battery is more than three years old, it's probably time to replace it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKEEP YOUR ENGINE HAPPY\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBy following these tips, you can help keep your boat engine in good working order. Regular maintenance will prolong the life of your engine and help ensure that it runs smoothly when you need it.\u003c\/p\u003e\n\u003cp\u003eIf you have any questions about boat engine maintenance, or if you need help troubleshooting an issue, feel free to contact us at sales@macombmarineparts.com for more information.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042584809667,"sku":"SIERRA-18-7916","price":10.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Oil-Filter-Sierra-Marine-18-7916.jpg?v=1776949055"},{"product_id":"sierra-powerhead-gasket-set-18-4303-1","title":"Powerhead Gasket Set | Sierra 18-4303-1","description":"\u003cp\u003ePowerhead Gasket Set | Sierra 18-4303-1\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePowerhead Gasket Set\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePowerhead Gasket Set\u003c\/li\u003e\n\u003cli\u003eContains 18-0850 Fuel pump mounting gasket, 18-2876 By-pass cover gasket, 18-2866 Exhaust cover gasket, 18-0953 Water passage gasket, 18-0117 Exhaust plate gasket, 18-2873 Gasket, 18-2956 Head gasket, 18-2867 Manifold to crankcase, 18-2857 Air silencer to carb gasket, 18-0985 Air silencer gasket, 18-2864 Adapter to powerhead gasket, 18-0991 Leaf plate gasket, 18-2547 Water passage cover gasket, 18-0999 Inner exhaust gasket, 18-0102 Exhaust manifold gasket, 18-0134 Intake plate gasket, 18-0977 Thermostat gasket\u003c\/li\u003e\n\u003cli\u003eReplaces OMC\/Johnson\/Evinrude 439085\u003c\/li\u003e\n\u003cli\u003eReplaces Mallory 9-64112\u003c\/li\u003e\n\u003cli\u003eReplaces Sierra 18-4303\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042585596099,"sku":"SIERRA-18-4303-1","price":151.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Powerhead-Gasket-Set-Sierra-18-4303-1.jpg?v=1776949058"},{"product_id":"sierra-shift-arm-screw-18-2170","title":"Sierra 18-2170 - Mercruiser Shift Arm Screw","description":"\u003ch2\u003eSierra 18-2170 - Mercruiser Shift Arm Screw\u003c\/h2\u003e\u003cp\u003eWhen a Mercruiser shift-arm repair calls for Mercury 10-45590 or 10-8M0084649, Sierra 18-2170 provides a part-number-matched replacement screw. Identifying the specified fastener is more reliable than choosing a similar-looking screw, particularly where the drive's service information calls for a particular shift-arm component. Verify the reference against your installed drive before ordering.\u003c\/p\u003e\u003ch2\u003ePart Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 18-2170\u003c\/li\u003e\n\u003cli\u003eComponent: Shift arm screw\u003c\/li\u003e\n\u003cli\u003eListed Application: Mercruiser shift arm; drive-specific fitment requires confirmation\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury: 10-45590 and 10-8M0084649\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor the corresponding Mercury reference item, see \u003ca href=\"\/products\/mercury-screw-10-8m0084649\"\u003eMercury 10-8M0084649 screw\u003c\/a\u003e; confirm the required reference for your drive when selecting either listing.\u003c\/p\u003e\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\u003cp\u003eUse the parts diagrams available on our website to locate the shift arm and identify its specified screw. Alternatively, send us your engine or drive model and serial number by email, text or live chat, and we'll confirm fitment before you order; include drive identification if the original assembly has been changed.\u003c\/p\u003e\u003ch5\u003eAdditional Information\u003c\/h5\u003e\u003cul\u003e\n\u003cli\u003eVendor: Sierra\u003c\/li\u003e\n\u003cli\u003ePart Number: 18-2170\u003c\/li\u003e\n\u003cli\u003eOEM Cross-Reference: Mercury 10-45590 and 10-8M0084649\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\u003cp\u003eRefer to the applicable Mercruiser drive service manual for fastener placement, tightening requirements and the specified shift-system checks.\u003c\/p\u003e\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\u003cp\u003e\u003cstrong\u003eQ: Which Mercury screw numbers does Sierra 18-2170 replace?\u003c\/strong\u003e\u003cbr\u003eA: The listed replacement references are Mercury 10-45590 and 10-8M0084649.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Is this the shift arm itself?\u003c\/strong\u003e\u003cbr\u003eA: No. This listing identifies the shift arm screw, not a replacement arm, cable or complete shift assembly.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Can I match it using thread size or length?\u003c\/strong\u003e\u003cbr\u003eA: Those measurements are not supplied in this listing. Use the specified part number and drive parts diagram rather than assuming a general-purpose screw is equivalent.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: Does it fit every Mercruiser drive?\u003c\/strong\u003e\u003cbr\u003eA: Universal drive coverage is not established. Confirm the screw reference for the actual drive model and serial number before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ: What tightening specification should I use?\u003c\/strong\u003e\u003cbr\u003eA: Use the applicable drive service manual's specification for this fastener; this listing does not establish a torque value or a thread-treatment requirement.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042585628867,"sku":"SIERRA-18-2170","price":3.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Mercruiser-Shift-Arm-Screw-Sierra-18-2170.jpg?v=1776949062"},{"product_id":"sierra-oil-seal-18-2066","title":"Sierra Oil Seal 18-2066","description":"SIERRA OIL SEAL 18-2066","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38042585661635,"sku":"SIERRA-18-2066","price":27.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Sierra-Oil-Seal-18-2066.jpg?v=1776949064"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/collections\/sierra-marine-parts.jpg?v=1776992125","url":"https:\/\/www.macombmarineparts.com\/collections\/sierra-marine-parts.oembed?page=94","provider":"MacombMarineParts.com","version":"1.0","type":"link"}