{"product_id":"mercury-belt-timing-57-8m0135591","title":"Mercury – Timing Belt | 9.9–20hp EFI Series | Marine-Grade Polymer | 8M0135591","description":"\u003ch3\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury – Timing Belt | 9.9–20hp EFI Series | Marine-Grade Polymer | 8M0135591\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 \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eAnyone who spends time on the water knows that the \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003esmallest\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e parts can make the \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003ebiggest\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e difference. A timing belt isn’t something you admire or talk about at the dock, but you definitely feel the confidence it gives when it’s doing its job right. With the Mercury Marine part 8M0135591 Timing Belt, you get that quiet reassurance every time the engine fires up. Whether you’re easing out from the slip at dawn or pushing across a windy bay, it’s one less thing you’ll worry about — because you know your motor is running in sync, smooth and steady.\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\"\u003eDesigned for Mercury 9.9–20hp EFI outboards\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eFits serial numbers 0R833820 and above (2017 and newer)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eHigh-strength polymer belt engineered for precise timing\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eDurable construction for extended service life\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eManufactured to exact Mercury Marine specifications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eReliable performance under both low-speed maneuvering and full-throttle operation\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\u003cspan data-preserver-spaces=\"true\"\u003eMercury 9.9hp EFI\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury 15hp EFI\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eMercury 20hp EFI\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan data-preserver-spaces=\"true\"\u003eIdeal for small fishing boats, utility skiffs, aluminum jon boats, tenders, inflatables, and lightweight 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 timing belt is the heartbeat of an EFI outboard’s internal rhythm. When it’s in perfect condition, the engine feels different — tighter, more responsive, and far more predictable. The Mercury 8M0135591 belt \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eis built\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e to maintain that exact synchronization, helping your motor breathe correctly and burn fuel efficiently. You’ll notice smooth acceleration, cleaner idle, and less mechanical strain across the powerband.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eFor boaters who service their own engines, this belt installs with a clean, positive fit that’s unmistakably OEM. There’s no stretchiness, no rough edges, nothing that feels “close enough.” It’s precise, and that precision pays off when you’re on the water far from the ramp. Mercury engineered it to withstand heat, vibration, salt exposure, and sudden load changes — all the things small outboards experience in a typical season.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003eThe real benefit? Peace of mind. A dependable timing belt means fewer surprises, more reliable performance, and an engine that stays in sync no matter how you use it.\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\"\u003eTiming components aren’t the place to experiment with aftermarket options. Mercury designs these belts specifically around the timing system of their EFI engines — exact tooth shape, exact length, exact tension. That’s why OEM belts tend to run smoother, last longer, and protect other engine components better. When you choose an original Mercury Marine part, you’re investing in reliability, efficiency, and long-term performance you can feel every time you head out.\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 engines does the 8M0135591 timing belt fit?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e It fits Mercury 9.9–20hp EFI outboards with serial numbers 0R833820 and newer.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ2\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e: How is this belt different from aftermarket versions?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Mercury’s belt matches factory tolerances exactly, ensuring the proper timing and long-term durability that generic belts often can’t provide.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ3: How do I confirm this is the \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003eright\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e replacement?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Check your engine’s serial number. If it falls within the listed range, this is the correct OEM belt.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ4: Can this be used in both saltwater and freshwater?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Absolutely. It’s engineered for harsh marine environments and holds up well in both conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan data-preserver-spaces=\"true\"\u003eQ5: Is installation manageable for most boat owners?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-preserver-spaces=\"true\"\u003e Yes, for those familiar with basic outboard service. Mercury provides clear guidance in the owner’s and service \u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003emanual\u003c\/span\u003e\u003cspan data-preserver-spaces=\"true\"\u003e.\u003c\/span\u003e\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46939324580131,"sku":"57-8M0135591","price":16.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/8M0135591_Main.jpg?v=1760631400","url":"https:\/\/partsvu.com\/en-ca\/products\/mercury-belt-timing-57-8m0135591","provider":"PartsVu","version":"1.0","type":"link"}