{"title":"Prop \u0026 Drive Shafts","description":"","products":[{"product_id":"volvo-prop-shaft-3851205","title":"Propeller Shaft | Volvo Penta 3851205","description":"\u003ch2\u003ePropeller Shaft | Volvo Penta 3851205\u003c\/h2\u003e\n\u003cp\u003ePropeller Shaft | Volvo Penta 3851205\u003c\/p\u003e\n\u003cp\u003eVolvo Penta Propeller Shaft\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVolvo Penta Propeller Shaft\u003c\/li\u003e\n\u003cli\u003eFor Volvo Penta DP-SM and DP-S model sterndrives\u003c\/li\u003e\n\u003cli\u003eOriginal Volvo Penta\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Volvo Penta","offers":[{"title":"Default Title","offer_id":38042670596291,"sku":"VOLVO-3851205","price":1943.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Propeller-Shaft-Volvo-Penta-3851205.jpg?v=1776950088"},{"product_id":"volvo-primary-shaft-873013","title":"Volvo Penta Flywheel Housing Shaft | Volvo 873013","description":"\u003ch2\u003eVolvo Penta Flywheel Housing Shaft | Volvo 873013\u003c\/h2\u003e\n\u003cp\u003eVOLVO Primary Shaft 873013\u003c\/p\u003e\n\u003cdiv aria-hidden=\"false\" role=\"tabpanel\" data-role=\"content\" id=\"description\" aria-labelledby=\"tab-label-description\" class=\"data item content\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cul\u003e\n\u003cli\u003eVolvo Penta Flywheel Housing Shaft\u003c\/li\u003e\n\u003cli\u003eFine spline\u003c\/li\u003e\n\u003cli\u003eUsed with single support bearing\u003c\/li\u003e\n\u003cli\u003eOEM Volvo Penta\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Volvo Penta","offers":[{"title":"Default Title","offer_id":38042673545411,"sku":"VOLVO-873013","price":868.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Volvo-Penta-Flywheel-Housing-Shaft-Volvo-873013.jpg?v=1776950132"},{"product_id":"sierra-propeller-shaft-18-2187","title":"Johnson Evinrude \/ OMC Cobra Propeller Shaft | Sierra 18-2187","description":"\u003ch2\u003eJohnson Evinrude \/ OMC Cobra Propeller Shaft | Sierra 18-2187\u003c\/h2\u003e\n\u003cp\u003eJohnson Evinrude \/ OMC Cobra Propeller Shaft | Sierra 18-2187\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSierra's aftermarket  Johnson Evinrude \/ OMC Cobra propeller shaft. Replaces Johnson Evinrude \/ OMC Cobra 391472 and\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e395209.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOMC Cobra Propeller Shaft\u003c\/li\u003e\n\u003cli\u003eUsed on OMC Cobra and late model 800 drives\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury 802336A2\u003c\/li\u003e\n\u003cli\u003eReplaces OMC 395209\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38043543240899,"sku":"SIERRA-18-2187","price":564.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Johnson-Evinrude-OMC-Cobra-Propeller-Shaft-Sierra-18-2187.jpg?v=1776960843"},{"product_id":"sierra-short-water-pump-shaft-18-2185","title":"OMC Short Water Pump Shaft | Sierra 18-2185","description":"\u003ch2 class=\"page-title\" data-mce-fragment=\"1\"\u003e\u003cspan class=\"base\" data-ui-id=\"page-title-wrapper\" data-mce-fragment=\"1\"\u003eOMC Short Water Pump Shaft | Sierra 18-2185\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan class=\"base\" data-ui-id=\"page-title-wrapper\" data-mce-fragment=\"1\"\u003eOMC Short Water Pump Shaft | Sierra 18-2185\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"base\" data-ui-id=\"page-title-wrapper\" data-mce-fragment=\"1\"\u003e\u003cspan\u003eSierra 18-2185 OMC Short Water Pump Shaft\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOMC Short Water Pump Shaft\u003c\/li\u003e\n\u003cli\u003eUsed on various OMC electric shift and Stringer stern drives\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury 802381A2\u003c\/li\u003e\n\u003cli\u003eReplaces OMC 909753\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38043557691587,"sku":"SIERRA-18-2185","price":201.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/OMC-Short-Water-Pump-Shaft-Sierra-18-2185.jpg?v=1776960983"},{"product_id":"volvo-shaft-853809","title":"Flywheel Housing Shaft | Volvo Penta 853809","description":"\u003ch2\u003eFlywheel Housing Shaft | Volvo Penta 853809\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eVolvo Penta 853809 Shaft\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVolvo Penta Flywheel Housing Shaft\u003c\/li\u003e\n\u003cli\u003eFine spline\u003c\/li\u003e\n\u003cli\u003eUsed with two support bearings\u003c\/li\u003e\n\u003cli\u003eOEM Volvo Penta\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Volvo Penta","offers":[{"title":"Default Title","offer_id":38043627126979,"sku":"VOLVO-853809","price":851.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Flywheel-Housing-Shaft-Volvo-Penta-853809.jpg?v=1776962358"},{"product_id":"sierra-bearing-carrier-drive-shaft-18-2183","title":"OMC Bearing Carrier Drive Shaft | Sierra 18-2183","description":"\u003ch2\u003eOMC Bearing Carrier Drive Shaft | Sierra 18-2183\u003c\/h2\u003e\n\u003cp\u003eOMC Bearing Carrier Drive Shaft | Sierra 18-2183\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSierra 18-2183 Drive Shaft\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOMC Bearing Carrier Drive Shaft\u003c\/li\u003e\n\u003cli\u003eUsed on OMC Stringer drives\u003c\/li\u003e\n\u003cli\u003eReplaces OMC 909121\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":38044004417731,"sku":"SIERRA-18-2183","price":214.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/OMC-Bearing-Carrier-Drive-Shaft-Sierra-18-2183.jpg?v=1776966362"},{"product_id":"volvo-propeller-shaft-872533","title":"Volvo Penta Propeller Shaft | Volvo Penta 872533","description":"\u003ch2\u003ePropeller Shaft | Volvo Penta 872533\u003c\/h2\u003e\n\u003cp\u003eVolvo Penta 872533 Propeller Shaft\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVolvo Penta Propeller Shaft\u003c\/li\u003e\n\u003cli\u003eInner prop shaft used on Volvo Penta AQ Duoprop stern drives\u003c\/li\u003e\n\u003cli\u003eOEM Volvo Penta\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Volvo Penta","offers":[{"title":"Default Title","offer_id":38044046590147,"sku":"VOLVO-872533","price":2035.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Volvo-Penta-Propeller-Shaft-Volvo-Penta-872533.jpg?v=1776967358"},{"product_id":"omc-cobra-lower-drive-shaft-sierra-18-1701","title":"OMC Cobra Lower Drive Shaft | Sierra Marine 18-1701","description":"\u003ch2\u003eOMC Cobra Lower Drive Shaft | Sierra 18-1701\u003c\/h2\u003e\n\u003cp\u003eSierra 18-1701 Shaft\u003c\/p\u003e\n\u003cdiv id=\"description\" class=\"data item content\" role=\"tabpanel\" aria-hidden=\"false\" data-role=\"content\" aria-labelledby=\"tab-label-description\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cul\u003e\n\u003cli\u003eOMC Cobra Lower Drive Shaft\u003c\/li\u003e\n\u003cli\u003eFits OMC Cobra drives\u003c\/li\u003e\n\u003cli\u003eReplaces OMC 911963\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eAdditional Information\u003c\/h5\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. Sierra is 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\u003ch4\u003e\u003cstrong\u003eFUEL LINES\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003ePRIMER BULBS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eFUEL FILTERS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eSPARK PLUGS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eOIL\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eOne of the most important things you can do for your boat engine is to change the oil 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\u003ch4\u003e\u003cstrong\u003eGEAR LUBE\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eBATTERY\u003c\/strong\u003e\u003c\/h4\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\u003e \u003c\/p\u003e\n\u003cp\u003eIf you need help with part identification, feel free to contact us for more information.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":41990558613699,"sku":"SIERRA-18-1701","price":281.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/OMC-Cobra-Lower-Drive-Shaft-Sierra-Marine-18-1701.jpg?v=1776975523"},{"product_id":"mercruiser-alpha-i-prop-shaft-sierra-18-2166","title":"Mercruiser Alpha I Prop Shaft | Sierra Marine 18-2166","description":"\u003ch2\u003eMercruiser Alpha I Prop Shaft | Sierra Marine 18-2166\u003c\/h2\u003e\n\u003cp\u003eMercruiser Alpha I Prop Shaft | Sierra Marine 18-2166\u003c\/p\u003e\n\u003cp\u003eSierra 18-2166 Prop Shaft\u003c\/p\u003e\n\u003cdiv aria-labelledby=\"tab-label-description\" data-role=\"content\" aria-hidden=\"false\" role=\"tabpanel\" class=\"data item content\" id=\"description\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cul\u003e\n\u003cli\u003eMercruiser Alpha I Prop Shaft\u003c\/li\u003e\n\u003cli\u003eFor all Mercruiser #1, MR, and Alpha I units s\/n 2791957 and above\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury 44-66060, 44-66060-3, 44-824110, \u0026amp; 44-860308\u003c\/li\u003e\n\u003cli\u003eReplaces OMC 775511\u003c\/li\u003e\n\u003cli\u003eReplaces Mallory 9-72450\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eAdditional Information\u003c\/h5\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. Sierra is 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\u003ch4\u003e\u003cstrong\u003eFUEL LINES\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003ePRIMER BULBS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eFUEL FILTERS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eSPARK PLUGS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eOIL\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eOne of the most important things you can do for your boat engine is to change the oil 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\u003ch4\u003e\u003cstrong\u003eGEAR LUBE\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eBATTERY\u003c\/strong\u003e\u003c\/h4\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 need help with part identification, feel free to contact us for more information.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":41990558908611,"sku":"SIERRA-18-2166","price":493.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Mercruiser-Alpha-I-Prop-Shaft-Sierra-Marine-18-2166.jpg?v=1776975525"},{"product_id":"mercruiser-upper-drive-shaft-sierra-18-2179","title":"Mercruiser Upper Drive Shaft | Sierra Marine 18-2179","description":"\u003ch2\u003eMercruiser Upper Drive Shaft | Sierra Marine 18-2179\u003c\/h2\u003e\n\u003cp\u003eSierra 18-2179 Drive Shaft\u003c\/p\u003e\n\u003cdiv id=\"description\" class=\"data item content\" role=\"tabpanel\" aria-hidden=\"false\" data-role=\"content\" aria-labelledby=\"tab-label-description\"\u003e\n\u003cdiv class=\"product attribute description\"\u003e\n\u003cdiv class=\"value\"\u003e\n\u003cul\u003e\n\u003cli\u003eMercruiser Upper Drive Shaft\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury 45-55796\u003c\/li\u003e\n\u003cli\u003eReplaces Mallory 9-72461\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eAdditional Information\u003c\/h5\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. Sierra is 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\u003ch4\u003e\u003cstrong\u003eFUEL LINES\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003ePRIMER BULBS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eFUEL FILTERS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eSPARK PLUGS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eOIL\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eOne of the most important things you can do for your boat engine is to change the oil 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\u003ch4\u003e\u003cstrong\u003eGEAR LUBE\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eBATTERY\u003c\/strong\u003e\u003c\/h4\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 need help with part identification, feel free to contact us for more information.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":41990562971843,"sku":"SIERRA-18-2179","price":152.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Mercruiser-Upper-Drive-Shaft-Sierra-Marine-18-2179.jpg?v=1776975527"},{"product_id":"omc-prop-shaft-sierra-18-2251","title":"OMC Propeller Shaft | Sierra Marine Products 18-2251","description":"\u003ch2\u003eOMC Propeller Shaft | Sierra Marine Products 18-2251\u003c\/h2\u003e\n\u003cp\u003eSierra 18-2251 Propeller Shaft\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOMC Propeller Shaft\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury 802486A2\u003c\/li\u003e\n\u003cli\u003eReplaces OMC 435022, 433017, 436740, 5004765\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eAdditional Information\u003c\/h5\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. Sierra is 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\u003ch4\u003e\u003cstrong\u003eFUEL LINES\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003ePRIMER BULBS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eFUEL FILTERS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eSPARK PLUGS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eOIL\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eOne of the most important things you can do for your boat engine is to change the oil 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\u003ch4\u003e\u003cstrong\u003eGEAR LUBE\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eBATTERY\u003c\/strong\u003e\u003c\/h4\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 need help with part identification, feel free to contact us for more information.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":41990565232835,"sku":"SIERRA-18-2251","price":413.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/OMC-Propeller-Shaft-Sierra-Marine-Products-18-2251.jpg?v=1776975529"},{"product_id":"omc-prop-shaft-sierra-18-2252","title":"OMC Propeller Shaft | Sierra Marine Products 18-2252","description":"\u003ch2\u003eOMC Propeller Shaft | Sierra Marine Products 18-2252\u003c\/h2\u003e\n\u003cp\u003eSierra 18-2252 Prop Shaft\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOMC Propeller Shaft\u003c\/li\u003e\n\u003cli\u003eReplaces OMC 387818, OMC 436888\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eAdditional Information\u003c\/h5\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. Sierra is 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\u003ch4\u003e\u003cstrong\u003eFUEL LINES\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003ePRIMER BULBS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eFUEL FILTERS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eSPARK PLUGS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eOIL\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eOne of the most important things you can do for your boat engine is to change the oil 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\u003ch4\u003e\u003cstrong\u003eGEAR LUBE\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eBATTERY\u003c\/strong\u003e\u003c\/h4\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 need help with part identification, feel free to contact us for more information.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":41990567002307,"sku":"SIERRA-18-2252","price":212.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/OMC-Propeller-Shaft-Sierra-Marine-Products-18-2252.jpg?v=1776975531"},{"product_id":"mercruiser-alpha-gen-ii-drive-shaft-sierra-18-2261","title":"Mercruiser Alpha Gen II Drive Shaft | Sierra 18-2261","description":"\u003ch2\u003eMercruiser Alpha Gen II Drive Shaft | Sierra 18-2261\u003c\/h2\u003e\n\u003cp\u003eSierra 18-2261 Drive Shaft\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMercruiser Alpha Gen II Drive Shaft\u003c\/li\u003e\n\u003cli\u003eFor all Alpha I Gen II drives (s\/n OD469859 and above) with new style 18-3056 impeller 18-3056\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury 45-816919\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eAdditional Information\u003c\/h5\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. Sierra is 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\u003ch4\u003e\u003cstrong\u003eFUEL LINES\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003ePRIMER BULBS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eFUEL FILTERS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eSPARK PLUGS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eOIL\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eOne of the most important things you can do for your boat engine is to change the oil 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\u003ch4\u003e\u003cstrong\u003eGEAR LUBE\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eBATTERY\u003c\/strong\u003e\u003c\/h4\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 need help with part identification, feel free to contact us for more information.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":41990568935619,"sku":"SIERRA-18-2261","price":509.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Mercruiser-Alpha-Gen-II-Drive-Shaft-Sierra-18-2261.jpg?v=1776975534"},{"product_id":"omc-long-water-pump-shaft-sierra-18-2184","title":"OMC Long Water Pump Shaft | Sierra Marine Products 18-2184","description":"\u003ch2\u003eOMC Long Water Pump Shaft | Sierra 18-2184\u003c\/h2\u003e\n\u003cp\u003eSierra 18-2184 Drive Shaft\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOMC Long Water Pump Shaft\u003c\/li\u003e\n\u003cli\u003eFits OMC 120-235 HP drives from 1976-77 and 225-245 HP drives from 1973-1975\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury 802378A2\u003c\/li\u003e\n\u003cli\u003eReplaces OMC 908087\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eAdditional Information\u003c\/h5\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. Sierra is 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\u003ch4\u003e\u003cstrong\u003eFUEL LINES\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003ePRIMER BULBS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eFUEL FILTERS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eSPARK PLUGS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eOIL\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eOne of the most important things you can do for your boat engine is to change the oil 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\u003ch4\u003e\u003cstrong\u003eGEAR LUBE\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eBATTERY\u003c\/strong\u003e\u003c\/h4\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 need help with part identification, feel free to contact us for more information.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":41990594396355,"sku":"SIERRA-18-2184","price":86.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/OMC-Long-Water-Pump-Shaft-Sierra-Marine-Products-18-2184.jpg?v=1776975537"},{"product_id":"omc-800-series-drive-shaft-sierra-marine-18-2186","title":"OMC 800 Series Drive Shaft | Sierra Marine 18-2186","description":"\u003ch2 class=\"page-title\"\u003eOMC 800 Series Drive Shaft | Sierra Marine 18-2186\u003c\/h2\u003e\n\u003cp\u003eOMC 800 Series Drive Shaft | Sierra Marine 18-2186\u003c\/p\u003e\n\u003cp class=\"page-title\"\u003eSierra Marine OMC 800 Series Drive Shaft | 18-2186\u003c\/p\u003e\n\u003cp\u003eSierra 18-2186 Drive Shaft\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOMC 800 Series Drive Shaft\u003c\/li\u003e\n\u003cli\u003eUsed on OMC 800 series stern drives\u003c\/li\u003e\n\u003cli\u003eLower Drive Shaft for OMC 800 Drives\u003c\/li\u003e\n\u003cli\u003eReplaces OMC 982424, 981109; GLM 22413\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eEach Sierra product meets or exceeds the original equipment part it replaces\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca rel=\"noopener noreferrer\" title=\"Special Order Part\" href=\"https:\/\/macombmarineparts.com\/pages\/special-order-request\" target=\"_blank\"\u003eSpecial Order Part - Click Here\u003c\/a\u003e\u003c\/p\u003e\n\u003ch5\u003eAdditional Information\u003c\/h5\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. Sierra is 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\u003ch4\u003e\u003cstrong\u003eFUEL LINES\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003ePRIMER BULBS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eFUEL FILTERS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eSPARK PLUGS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eOIL\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eOne of the most important things you can do for your boat engine is to change the oil 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\u003ch4\u003e\u003cstrong\u003eGEAR LUBE\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eBATTERY\u003c\/strong\u003e\u003c\/h4\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 need help with part identification, feel free to contact us for more information.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":41990599082179,"sku":"SIERRA-18-2186","price":209.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/OMC-800-Series-Drive-Shaft-Sierra-Marine-18-2186.jpg?v=1776975542"},{"product_id":"omc-cobra-steering-pivot-shaft-brp-3852728","title":"OMC Cobra Steering Pivot Shaft | Bombardier 3852728","description":"\u003ch2 class=\"page-title\" data-mce-fragment=\"1\"\u003eOMC Cobra Steering Pivot Shaft | Bombardier 3852728\u003c\/h2\u003e\n\u003cp\u003eOMC 3852728 Pivot Shaft\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOMC 3852728 Cobra Steering Pivot Shaft\u003c\/li\u003e\n\u003cli\u003eOriginal OMC\u003c\/li\u003e\n\u003cli\u003eReplaces OMC\/Johnson\/Evinrude 913542\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bombardier Recreational Products","offers":[{"title":"Default Title","offer_id":41990600163523,"sku":"BRP-3852728","price":48.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/OMC-Cobra-Steering-Pivot-Shaft-Bombardier-3852728.jpg?v=1776975545"},{"product_id":"mercruiser-mr-alpha-lower-drive-shaft-sierra-18-2180","title":"Mercruiser MR-Alpha Lower Drive Shaft | Sierra 18-2180","description":"\u003ch2 class=\"page-title\"\u003eMercruiser MR-Alpha Lower Drive Shaft | Sierra 18-2180\u003c\/h2\u003e\n\u003cp class=\"page-title\"\u003eMercruiser MR-Alpha Lower Drive Shaft | Sierra 18-2180\u003c\/p\u003e\n\u003cp\u003eSierra 18-2180 Drive Shaft\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMercruiser MR\/Alpha Lower Drive Shaft\u003c\/li\u003e\n\u003cli\u003eFor all Mercruiser MR\/Alpha units\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury 45-42634\u003c\/li\u003e\n\u003cli\u003eReplaces OMC 775513\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eEach Sierra product meets or exceeds the original equipment part it replaces\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e \u003c\/li\u003e\n\u003cli\u003eReplaces Mallory 9-72460\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eAdditional Information\u003c\/h5\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. Sierra is 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\u003ch4\u003e\u003cstrong\u003eFUEL LINES\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003ePRIMER BULBS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eFUEL FILTERS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eSPARK PLUGS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eOIL\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eOne of the most important things you can do for your boat engine is to change the oil 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\u003ch4\u003e\u003cstrong\u003eGEAR LUBE\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eBATTERY\u003c\/strong\u003e\u003c\/h4\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 need help with part identification, feel free to contact us for more information.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":41990605471939,"sku":"SIERRA-18-2180","price":226.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Mercruiser-MR-Alpha-Lower-Drive-Shaft-Sierra-18-2180.jpg?v=1776975549"},{"product_id":"mercruiser-gen-ii-propeller-shaft-sierra-18-2254","title":"Mercruiser Gen II Propeller Shaft | Sierra 18-2254","description":"\u003cp class=\"Polaris-Header-Title_2qj8j\"\u003eMercruiser Gen II Propeller Shaft | Sierra 18-2254\u003c\/p\u003e\n\u003ch2 class=\"Polaris-Header-Title_2qj8j\"\u003eSierra Mercruiser Gen II Propeller Shaft | 18-2254\u003c\/h2\u003e\n\u003cp\u003eSierra 18-2254 Prop Shaft\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMercruiser Gen II Propeller Shaft\u003c\/li\u003e\n\u003cli\u003eFor Mercruiser Alpha Gen II drives (s\/n L100040 \u0026amp; above)\/Vazer\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury 44-850308\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eEach Sierra Marine product meets or exceeds the original equipment part it replaces\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eAdditional Information\u003c\/h5\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. Sierra is 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\u003ch4\u003e\u003cstrong\u003eFUEL LINES\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003ePRIMER BULBS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eFUEL FILTERS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eSPARK PLUGS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eOIL\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eOne of the most important things you can do for your boat engine is to change the oil 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\u003ch4\u003e\u003cstrong\u003eGEAR LUBE\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eBATTERY\u003c\/strong\u003e\u003c\/h4\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 need help with part identification, feel free to contact us for more information.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":41990616547523,"sku":"SIERRA-18-2254","price":522.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Mercruiser-Gen-II-Propeller-Shaft-Sierra-18-2254.jpg?v=1776975552"},{"product_id":"mercruiser-alpha-gen-ii-drive-shaft-sierra-18-2324","title":"Mercruiser Alpha Gen II Drive Shaft | Sierra 18-2324","description":"\u003cp class=\"Polaris-Header-Title_2qj8j\"\u003eMercruiser Alpha Gen II Drive Shaft | Sierra 18-2324\u003c\/p\u003e\n\u003ch2 class=\"Polaris-Header-Title_2qj8j\"\u003eSierra Mercruiser Alpha Gen II Drive Shaft | 18-2324\u003c\/h2\u003e\n\u003cp\u003eSierra 18-2324 Drive Shaft\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMercruiser Alpha Gen II Upper Drive Shaft\u003c\/li\u003e\n\u003cli\u003eFor Gen II S\/N F680000 and up\u003c\/li\u003e\n\u003cli\u003eReplaces Mercury 45-557961\u003c\/li\u003e\n\u003cli\u003eReplaces Mallory 9-72462\u003c\/li\u003e\n\u003cli\u003e\u003cspan class=\"a-list-item\"\u003eEach Sierra Marine product meets or exceeds the original equipment part it replaces\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eAdditional Information\u003c\/h5\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. Sierra is 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\u003ch4\u003e\u003cstrong\u003eFUEL LINES\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003ePRIMER BULBS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eFUEL FILTERS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eSPARK PLUGS\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eOIL\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eOne of the most important things you can do for your boat engine is to change the oil 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\u003ch4\u003e\u003cstrong\u003eGEAR LUBE\u003c\/strong\u003e\u003c\/h4\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\u003ch4\u003e\u003cstrong\u003eBATTERY\u003c\/strong\u003e\u003c\/h4\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 need help with part identification, feel free to contact us for more information.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":41990633554115,"sku":"SIERRA-18-2324","price":48.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/Mercruiser-Alpha-Gen-II-Drive-Shaft-Sierra-18-2324.jpg?v=1776975555"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/collections\/prop-drive-shafts.jpg?v=1776992980","url":"https:\/\/www.macombmarineparts.com\/collections\/prop-drive-shafts.oembed","provider":"MacombMarineParts.com","version":"1.0","type":"link"}