{"product_id":"sierra-v-belt-47-15520-marine-inboard-sterndrive","title":"Sierra V-Belt 47-15520 — Marine Inboard Sterndrive","description":"\u003cp\u003eThe Sierra 18-15520 is a cogged marine V-belt designed for selected Mercury MerCruiser and OMC inboard and sterndrive accessory-drive systems. Its high-strength synthetic cords resist stretching and shock loads, while the precision-moulded cog profile improves flexibility and promotes airflow to reduce damaging heat buildup. The specially compounded rubber construction provides smooth load transfer and dependable contact with the pulley grooves.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMarine replacement cogged V-belt\u003c\/li\u003e\n\u003cli\u003eEffective length: \u003cstrong\u003e52 inches \/ 132.1 cm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTop width: \u003cstrong\u003e29\/64 inch \/ 11.5 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eHigh-strength, low-stretch synthetic cords\u003c\/li\u003e\n\u003cli\u003ePrecision-moulded cogs improve flexibility\u003c\/li\u003e\n\u003cli\u003eOpen cog profile promotes cooling airflow\u003c\/li\u003e\n\u003cli\u003eRubber edges maintain positive pulley contact\u003c\/li\u003e\n\u003cli\u003eW-profile synthetic-rubber construction\u003c\/li\u003e\n\u003cli\u003eSupplied as one replacement belt\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eEngine Compatibility\u003c\/h2\u003e\n\u003cp\u003eDesigned for selected Mercury MerCruiser and OMC marine engines that specify one of the corresponding OEM belt numbers. Common references associate this belt with certain MerCruiser 305 and 350 V8 applications using a high-mounted power-steering pump, along with selected OMC sterndrive installations.\u003c\/p\u003e\n\n\u003ch2\u003eSerial Number Fitment Notice\u003c\/h2\u003e\n\u003cp\u003eConfirm the engine model, serial-number range, original belt number and complete accessory-drive arrangement before ordering. Engines of the same displacement may use different belts depending on the power-steering pump position, alternator, pulley arrangement and production year.\u003c\/p\u003e\n\n\u003ch2\u003eWhen This Part Needs Replacement\u003c\/h2\u003e\n\u003cp\u003eReplace the belt when it shows cracking, glazing, frayed edges, missing cog material, oil contamination or excessive stretching. Squealing, slipping, repeated loss of tension or a belt riding unusually low in the pulley groove can also indicate belt wear, pulley wear or incorrect fitment.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cp\u003eInspect all pulleys for corrosion, contamination, wear and misalignment before installing the replacement belt. Do not force the belt over the pulley flanges. Set the tension according to the engine manufacturer's specification, rotate the drive by hand to confirm proper seating and recheck the tension after the initial operating period.\u003c\/p\u003e\n\n\u003ch2\u003eAlternate \/ Superseded Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSierra part number: \u003cstrong\u003e18-15520\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSupplier or catalogue reference: \u003cstrong\u003e47-15520\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMallory: \u003cstrong\u003e9-55001\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMercury MerCruiser: \u003cstrong\u003e57-33170\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMercury Quicksilver: \u003cstrong\u003e57-33170Q\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMercury MerCruiser: \u003cstrong\u003e57-34359\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMercury MerCruiser: \u003cstrong\u003e57-37619\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMercury Quicksilver: \u003cstrong\u003e57-37619Q\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMercury MerCruiser: \u003cstrong\u003e57-37619T\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOMC: \u003cstrong\u003e912714\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eOMC: \u003cstrong\u003e0912714\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRelated OMC references: \u003cstrong\u003e0509287\u003c\/strong\u003e, \u003cstrong\u003e0509288\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eUPC: \u003cstrong\u003e030999566690\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eParts Desk Insights\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBest use case:\u003c\/strong\u003e This belt is the right choice for pre-season service and routine maintenance on MerCruiser 305 and 350 V8 inboard and sterndrive boats, particularly those with a high-mounted power-steering pump configuration. If your engine specifies OEM belt numbers 57-33170, 57-37619, OMC 912714 or related references, this is the direct replacement to have ready before launch. It also makes a practical onboard spare — a belt failure can simultaneously take out raw water cooling, power steering and battery charging.\u003c\/p\u003e\n\u003cp\u003eThis belt is often tied to a specific power-steering and pulley layout, not just an engine displacement. Matching the original number and accessory arrangement is the safest way to avoid ordering a belt that is the right length but wrong for the installation. Always verify the OEM belt number, power-steering pump position and pulley configuration before ordering.\u003c\/p\u003e\n\u003cp\u003eFor a complete cooling system service, pair this belt with a raw water pump impeller replacement. See the \u003ca href=\"\/products\/8131470458916\"\u003ePCM Impeller Kit RP061017\u003c\/a\u003e and \u003ca href=\"\/products\/8131470491684\"\u003ePCM \/ Crusader RP061022 Raw Water Pump Impeller\u003c\/a\u003e for compatible options. Need a different belt size? Browse the \u003ca href=\"\/products\/11077659328548\"\u003eSierra V-Belt 47-15400\u003c\/a\u003e, \u003ca href=\"\/products\/11077659361316\"\u003eSierra V-Belt 47-15410\u003c\/a\u003e, \u003ca href=\"\/products\/11077659426852\"\u003eSierra V-Belt 47-15440\u003c\/a\u003e, \u003ca href=\"\/products\/11077659459620\"\u003eSierra V-Belt 47-15450\u003c\/a\u003e, \u003ca href=\"\/products\/11077659492388\"\u003eSierra V-Belt 47-15455\u003c\/a\u003e, \u003ca href=\"\/products\/11077659557924\"\u003eSierra V-Belt 47-15460\u003c\/a\u003e, \u003ca href=\"\/products\/11077659590692\"\u003eSierra V-Belt 47-15470\u003c\/a\u003e, \u003ca href=\"\/products\/11077659623460\"\u003eSierra V-Belt 47-15480\u003c\/a\u003e, and \u003ca href=\"\/products\/11077659721764\"\u003eSierra V-Belt 47-15550\u003c\/a\u003e for other sizes in the same series.\u003c\/p\u003e\n\u003cp\u003eShop all \u003ca href=\"\/collections\/475069022244\"\u003eEngine Parts \u0026amp; Maintenance\u003c\/a\u003e or browse \u003ca href=\"\/collections\/475200946212\"\u003ePropulsion \u0026amp; Powertrain\u003c\/a\u003e for related components.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51037541302308,"sku":"47-15520","price":60.29,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/47-15128_3195b7ff-d4fd-46d9-8570-477d52f439d8.jpg?v=1783568594","url":"https:\/\/marisolmarine.com\/products\/sierra-v-belt-47-15520-marine-inboard-sterndrive","provider":"Marisol Marine Company","version":"1.0","type":"link"}