{"product_id":"4-in-exhaust-hose-t-bolt-band-clamp-sierra-18-720-4000","title":"Sierra 18-720-4000 T-Bolt Band Clamp | 4 in. Exhaust Hose | 316 SS","description":"\u003ch2\u003eSierra 18-720-4000 — T-Bolt Band Clamp | 4 in. Exhaust Hose | Marine Grade 316 Stainless Steel | Below Waterline Rated\u003c\/h2\u003e\n\u003cp\u003eSierra 18-720-4000 is a marine-grade 316 stainless steel T-bolt band clamp designed specifically for 4 in. ID Shields 200 and 250 series marine exhaust hose. Features an extra-long 1\/4 in. bolt with nyloc nut, 0.25 in. band thickness, and 3\/4 in. band width. Diameter range 4.18–4.84 in. Rated for below waterline applications. Maximum torque 75 in-lbs. Sold individually — order the quantity needed.\u003c\/p\u003e\n\n\u003ch2\u003eConfirm Fitment Before Ordering\u003c\/h2\u003e\n\u003cp\u003eNot sure if this clamp fits your hose? Give us your hose size, series, and application and we’ll confirm it for you before you order — by email, text, or live chat.\u003c\/p\u003e\n\n\u003ch2\u003ePart Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSierra Part Number:\u003c\/strong\u003e 18-720-4000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e T-bolt band clamp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 4 in. ID Shields 200 and 250 series marine exhaust hose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Range:\u003c\/strong\u003e 4.18–4.84 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Marine grade 316 stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolt:\u003c\/strong\u003e Extra-long 1\/4 in. bolt with nyloc nut\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBand Thickness:\u003c\/strong\u003e 0.25 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBand Width:\u003c\/strong\u003e 3\/4 in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Torque:\u003c\/strong\u003e 75 in-lbs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated For:\u003c\/strong\u003e Below waterline applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold As:\u003c\/strong\u003e Individually — order quantity as needed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVendor:\u003c\/strong\u003e Sierra International\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch5\u003eAdditional Information\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVendor:\u003c\/strong\u003e Sierra International\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 18-720-4000\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e 4 in. ID Shields 200 and 250 series marine exhaust hose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold As:\u003c\/strong\u003e Individually\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eInstall following the hose and fitting manufacturer’s guidelines for your exhaust system. Torque to a maximum of 75 in-lbs — do not over-torque. Confirm the clamp diameter range (4.18–4.84 in.) covers your installed hose outside diameter before installation.\u003c\/p\u003e\n\n\u003ch5\u003eFrequently Asked Questions\u003c\/h5\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What hose is this clamp designed for?\u003c\/strong\u003e\u003cbr\u003eA: Sierra 18-720-4000 is designed specifically for 4 in. ID Shields 200 and 250 series marine exhaust hose. It covers a diameter range of 4.18–4.84 in. Confirm your hose outside diameter falls within this range before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why use a T-bolt clamp instead of a standard worm gear clamp on exhaust hose?\u003c\/strong\u003e\u003cbr\u003eA: T-bolt clamps apply uniform clamping pressure around the entire hose circumference, which is important for large-diameter exhaust hose connections subject to heat cycling, vibration, and pressure. Standard worm gear clamps concentrate force at the screw point and can allow leaks on large marine exhaust applications. T-bolt clamps are the correct type for Shields 200\/250 series exhaust hose.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this clamp rated for below waterline use?\u003c\/strong\u003e\u003cbr\u003eA: Yes — the 18-720-4000 is specifically rated for below waterline applications. The 316 stainless steel construction resists corrosion in both salt and fresh water environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the maximum torque for this clamp?\u003c\/strong\u003e\u003cbr\u003eA: Maximum torque is 75 in-lbs. Do not exceed this value — over-torquing can distort the hose or damage the clamp band.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many clamps do I need?\u003c\/strong\u003e\u003cbr\u003eA: This listing is for one (1) individual clamp. Order the quantity needed for your installation — typically two clamps per hose connection (one at each end).\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":53199710028096,"sku":"SIERRA-18-720-4000","price":13.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2712\/8720\/files\/sierra-18-720-_1_7.jpg?v=1790069280","url":"https:\/\/www.macombmarineparts.com\/de\/products\/4-in-exhaust-hose-t-bolt-band-clamp-sierra-18-720-4000","provider":"MacombMarineParts.com","version":"1.0","type":"link"}