{"product_id":"sierra-18-15440-marine-v-belt-44-in-replaces-mercury-57-49213a1-57-45856-omc-gas","title":"Sierra V-Belt 18-15440 (Replaces Mercury Marine 57-45856) for 4.3L 262 CID V6, 175\/185 HP 1985-92","description":"\u003cp\u003eThe Sierra 18-15440 V-Belt is a serpentine-style drive belt engineered for 4.3L 262 CID V6 marine engines, covering 175 HP and 185 HP model applications built within the 1985-92 production span, specifically engines falling in the A331455 - D714106 serial number range. This V-belt drives the water pump and other front-end accessories on the engine, keeping cooling and charging systems running under continuous marine duty. Constructed as a V-Belt style belt in grey, it is sized to the exact dimensions of the original equipment belt for this engine family so pulley alignment and tension are maintained without modification.\u003c\/p\u003e\u003cp\u003eInstallation is a direct fit for the listed 4.3L 262 CID V6 engines, and the belt cross-references directly to Mercury Marine OEM part numbers, so it can be used as a drop-in replacement for a worn or cracked factory belt. Regular inspection and replacement of the drive belt helps prevent water pump failure and overheating, both common causes of engine damage when a belt slips or breaks underway. Each belt ships as a single unit ready to install using standard hand tools and normal belt tensioning procedures.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-15440\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e V-Belt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt Style:\u003c\/strong\u003e V Belt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engine:\u003c\/strong\u003e 4.3L 262 CID V6 (6-cylinder)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHorsepower Rating:\u003c\/strong\u003e 175\/185 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Years:\u003c\/strong\u003e 1985-92\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSerial Number Range:\u003c\/strong\u003e A331455 - D714106\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e Mercury Marine 57-45856, 57-49213A1, 57-93658\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 9.3 inches L x 3.3 inches W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.25 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Grey\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Mexico\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e4.3L 262 CID V6 engines, 175 HP and 185 HP models, 1985-92, serial number range A331455 - D714106\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury Marine 57-45856\u003c\/li\u003e\n\u003cli\u003eMercury Marine 57-49213A1\u003c\/li\u003e\n\u003cli\u003eMercury Marine 57-93658\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-15440 V-belt fit?\u003c\/strong\u003e It fits 4.3L 262 CID V6 marine engines rated at 175 HP and 185 HP, specifically units built within the A331455 - D714106 serial number range, model years 1985-92.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 18-15440 an OEM Mercury Marine part number?\u003c\/strong\u003e No, 18-15440 is the Sierra part number; it cross-references to Mercury Marine OEM numbers 57-45856, 57-49213A1, and 57-93658 for direct fit and function.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of this V-belt?\u003c\/strong\u003e The Sierra 18-15440 measures 9.3 inches in length by 3.3 inches in width.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-15440 V-belt weigh?\u003c\/strong\u003e This belt weighs 0.25 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-15440 belt?\u003c\/strong\u003e It is grey, matching the standard appearance of the original equipment serpentine belt it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this belt be used on 1993 or newer 4.3L engines?\u003c\/strong\u003e The 18-15440 is designated for 1985-92 model year 4.3L 262 CID V6 engines within the A331455 - D714106 serial range; it is not specified for engines outside that range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e The 18-15440 V-belt is a genuine Sierra part manufactured to fit 4.3L 262 CID V6 engines as a replacement for the Mercury Marine equivalents.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does the drive belt do on this engine?\u003c\/strong\u003e On the 4.3L 262 CID V6 applications covered by part 18-15440, this V-belt drives the water pump and other front-end engine accessories, so a worn or cracked belt can affect cooling performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order this part?\u003c\/strong\u003e Ordering the Sierra 18-15440 includes one V-belt, sized for the 4.3L 262 CID V6 175\/185 HP applications listed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the Sierra 18-15440 V-belt manufactured?\u003c\/strong\u003e This belt is manufactured in Mexico.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my old belt needs replacing?\u003c\/strong\u003e Cracking, glazing, or fraying on the belt surface are signs it should be replaced with a fitting part such as the Sierra 18-15440 to avoid water pump drive failure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-15440 replace more than one Mercury Marine number?\u003c\/strong\u003e Yes, it cross-references to three Mercury Marine numbers: 57-45856, 57-49213A1, and 57-93658.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988088533211,"sku":"SIE-18-15440","price":26.45,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-15440__56928.1739458687.500.750.jpg?v=1785188050","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-15440-marine-v-belt-44-in-replaces-mercury-57-49213a1-57-45856-omc-gas","provider":"Good Vibes Marina","version":"1.0","type":"link"}