{"product_id":"mercury-mercruiser-serpentine-belt-2111-mm-fits-mie-8-1s-mcm-496-mag-engines-57-865635q02","title":"Mercury – Serpentine Belt | Engine Drive System | Black Composite | 865635Q02","description":"\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury – Serpentine Belt | Engine Drive System | Black Composite | 865635Q02\u003c\/span\u003e\u003c\/h3\u003e\n\u003ch2\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eOverview\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eIf you spend enough time on the water, you start to appreciate the parts that quietly carry the load. A good serpentine belt is one of those pieces you almost forget about… until the day it fails. That’s why having a belt you can trust feels so reassuring. \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWith this Mercury Marine part number 865635Q02, you get that easy confidence — the kind that lets you focus on the horizon instead of worrying about what’s spinning under the hatch. Whether you’re easing away from the dock at sunrise or pushing toward open water with the family aboard, it’s the sort of dependable gear that keeps the whole trip steady and stress-free.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003eKey Features\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eDrives critical engine systems with consistent, reliable tension.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eConstructed from durable marine-grade composite material.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eDesigned to match the original belt length: \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e2,111mm.\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eEngineered to work seamlessly with factory pulleys and accessories.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eBuilt to withstand heat, vibration, and long hours on the water.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eFits \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e2005 and newer MIE 8.1S engines\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e (serial number 0W390000 and up).\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eFits \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e2005 and newer MCM 496 Magnum engines\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e when the power steering pump has been removed.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan data-preserver-spaces=\"true\"\u003eDesigned for both \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003esterndrive\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e and \u003c\/span\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003einboard\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Mercury configurations.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eCommon on performance cruisers, sport boats, tow-sport boats, and larger family runabouts.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eA serpentine belt might not be the first thing you brag about at the marina, but you feel it every second your engine is running. This belt grips smooth and tight, keeping your alternator, water circulation pump, and other systems moving with steady, unwavering rhythm. You’ll notice the difference in how the engine idles — clean, even, and calm — and how it responds when you lean into the throttle.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eBecause this belt is built to Mercury’s original specifications, it slides into place without the frustrating play or misalignment you sometimes get from aftermarket options. No squeals, no rubbing, no guessing. Just a snug, proper fit that holds under heat, load, and long days spent bouncing through chop.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eIts marine-grade construction resists glazing, cracking, and stretching, even after hours of running under heavy load. And since the belt length is identical to what Mercury installs from the factory, you can swap it in with confidence knowing your engine systems will keep their proper tension and performance.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWhy Buy OEM\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eWhen you’re relying on a powerful marine engine, shortcuts never pay off. Choosing a genuine Mercury Marine part gives you reliability that isn’t worth gambling on. Thi\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003es belt is crafted to the exact tolerances your engine was designed around, so you’re not dealing with premature wear, slipping, or mystery noises down the road. It’s cost-effective in the long run because it protects more expensive components and eliminates the guesswork. If a fellow boater asked for my honest recommendation, I’d always tell them to stick with OEM for something this important.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003eFAQ\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ1: Which Mercury engines does the 865635Q02 serpentine belt fit?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e It fits 2005 and newer MIE 8.1S engines and select 2005+ 496 Magnum engines without a power steering pump.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ2: What makes this different from an aftermarket belt?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e It matches Mercury’s original dimensions exactly, ensuring correct tension and long-term reliability.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ3: How can I confirm this is the right belt for my setup?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMatch your engine’s serial number and verify whether the power steering pump is installed.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ4: Can this belt be used in both saltwater and freshwater environments?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Yes — its construction is designed for any marine environment.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ5: Is installation straightforward?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Most owners can replace it with common tools and clear access to the front of the engine.\u003c\/span\u003e\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46939329134883,"sku":"57-865635Q02","price":92.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/865635q02_main.jpg?v=1760631268","url":"https:\/\/partsvu.com\/fr-ca\/products\/mercury-mercruiser-serpentine-belt-2111-mm-fits-mie-8-1s-mcm-496-mag-engines-57-865635q02","provider":"PartsVu","version":"1.0","type":"link"}