{"product_id":"mercury-mercruiser-serpentine-belt-1941-mm-fits-mcm-v-6-v-8-alpha-engines-57-865615q04","title":"Mercury – Serpentine Belt | Engine Drive System | Rubber Composite | 865615Q04","description":"\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury – Serpentine Belt | Engine Drive System | Rubber Composite | 865615Q04\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eOverview\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e There’s something reassuring about hearing your engine settle into that familiar, even rumble when you turn the key. On those mornings when the water’s glassy and the sun’s just clearing the trees, you want every part of your boat working in quiet harmony\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e. A good serpentine belt doesn’t draw attention to itself, but you feel its presence every time your alternator charges cleanly, your cooling system holds steady, and your boat responds with confidence. This Mercury Marine part delivers that sense of reliability, keeping your engine breathing easy whether you’re cruising a calm river or pushing toward open water.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eKey Features\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eDesigned for MerCruiser V6 and V8 engines with standard cooling.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eBuilt for engines using 305 and 350 cubic inch configurations.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMeasures 1,941mm for precise fit and tension.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMade from marine-tested rubber composite for long wear.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMatches the original belt installed by MerCruiser.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eEngineered for smooth tracking and dependable accessory drive performance.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eFits MerCruiser 2001 and newer V6 and V8 (305 \u0026amp; 350 cubic inch) Alpha engines.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWorks on engines with standard cooling systems.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eCompatible with serial numbers 0M320025 and above.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eCommonly found on runabouts, bowriders, family cruisers, tow boats, and multi-use recreational vessels.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eSuitable for both sterndrive and inboard setups requiring this specific belt length and routing pattern\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e This belt keeps your engine’s vital systems running in a tight, coordinated rhythm. With the correct length and groove profile, the belt grips the pulleys cleanly, reducing slip, vibration, and uneven tensionin\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eg. The result is a smooth delivery of power to every accessory—your alternator charges consistently, your water pump circulates steadily, and your steering feels balanced and responsive.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eDuring installation, the difference between an OEM belt and a generic aftermarket one becomes clear. This Mercury Marine part settles into place naturally, matching the factory routing without forcing or stretching. You’ll feel the correct tension the moment it’s seated, giving you confidence that the belt will hold up under long hours of heat, moisture, and engine vibration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eBecause it’s built from a marine-specific rubber blend, it resists glazing, cracking, and premature wear—a real advantage if you do long weekend runs or spend time at higher RPM.\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e It’s one of those parts that quietly improves the reliability of your boat without ever being the star of the show.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWhy Buy OEM\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e A serpentine belt may seem simple, but choosing the right one matters. OEM belts are engineered to match the engine’s load requirements, pulley distances, and tension parameters to the millimeter. That means fewer failures, fewer adjustments, and long-term peace of mind\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e. When another boater asks for advice, an OEM belt is the recommendation you give without hesitation. It protects your engine investment and performs exactly the way Mercury intended.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eFAQ Section\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ1: Which engines does this serpentine belt fit?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e It fits MerCruiser 2001 and newer V6 and \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eV8 (305 and 350 cubic inch) engines with\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e standard cooling.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ2: Why choose OEM over aftermarket?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e OEM belts provide the correct length, groove pattern, and rubber formulation for smooth, reliable operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ3: How do I confirm it’s the correct belt?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Check your engine model, cooling system type, and serial number. If they match the product listing, this is the right belt.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ4: Is it suitable for both freshwater and saltwater?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Yes, the belt is built with materials that stand up to both environments.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ5: Is installation difficult?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Most owners can replace it themselves using basic tools and the engine’s routing diagram.\u003c\/span\u003e\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46939329593635,"sku":"57-865615Q04","price":105.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/57-865615q04.jpg?v=1761568118","url":"https:\/\/partsvu.com\/fr\/products\/mercury-mercruiser-serpentine-belt-1941-mm-fits-mcm-v-6-v-8-alpha-engines-57-865615q04","provider":"PartsVu","version":"1.0","type":"link"}