{"product_id":"mercury-exhaust-flapper-4-in-o-d-12644a1","title":"Mercury – Quicksilver Exhaust Flapper Kit | Exhaust System Component | 4-Inch Through-Transom | 12644A1","description":"\u003cp data-start=\"0\" data-end=\"109\"\u003e\u003cstrong data-start=\"0\" data-end=\"107\"\u003eMercury – Quicksilver Exhaust Flapper Kit | Exhaust System Component | 4-Inch Through-Transom | 12644A1\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"111\" data-end=\"114\"\u003e\n\u003ch3 data-start=\"116\" data-end=\"134\"\u003e\u003cstrong data-start=\"120\" data-end=\"132\"\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"135\" data-end=\"719\"\u003eEvery boater knows that distinctive rumble of a through-transom exhaust — the sound that says your engine’s alive and breathing right. The \u003cstrong data-start=\"274\" data-end=\"332\"\u003eMercury Marine 12644A1 Quicksilver Exhaust Flapper Kit\u003c\/strong\u003e helps keep that performance sound crisp while protecting your system from unwanted backflow. Designed for \u003cstrong data-start=\"439\" data-end=\"473\"\u003e4-inch through-transom outlets\u003c\/strong\u003e, this flapper guards your exhaust path from water intrusion when you throttle down or shut off. It’s a small part with a big purpose: keeping your engine safe and your performance smooth, all while showing off that iconic Quicksilver “Q” logo.\u003c\/p\u003e\n\u003chr data-start=\"721\" data-end=\"724\"\u003e\n\u003ch3 data-start=\"726\" data-end=\"748\"\u003e\u003cstrong data-start=\"730\" data-end=\"746\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"751\" data-end=\"868\"\u003e\n\u003cstrong data-start=\"751\" data-end=\"763\"\u003ePurpose:\u003c\/strong\u003e Prevents water from backing into the exhaust system during deceleration or when idling in rough water.\u003c\/li\u003e\n\u003cli data-start=\"871\" data-end=\"985\"\u003e\n\u003cstrong data-start=\"871\" data-end=\"884\"\u003eMaterial:\u003c\/strong\u003e Constructed from \u003cstrong data-start=\"902\" data-end=\"941\"\u003eheat-resistant, marine-grade rubber\u003c\/strong\u003e for flexibility and long-term durability.\u003c\/li\u003e\n\u003cli data-start=\"988\" data-end=\"1076\"\u003e\n\u003cstrong data-start=\"988\" data-end=\"1000\"\u003eFitment:\u003c\/strong\u003e Designed for \u003cstrong data-start=\"1014\" data-end=\"1073\"\u003e4-inch outside diameter through-transom exhaust outlets\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli data-start=\"1079\" data-end=\"1172\"\u003e\n\u003cstrong data-start=\"1079\" data-end=\"1092\"\u003eIncluded:\u003c\/strong\u003e Comes with \u003cstrong data-start=\"1104\" data-end=\"1147\"\u003eone flapper and a stainless steel clamp\u003c\/strong\u003e for easy installation.\u003c\/li\u003e\n\u003cli data-start=\"1175\" data-end=\"1281\"\u003e\n\u003cstrong data-start=\"1175\" data-end=\"1193\"\u003eDesign Detail:\u003c\/strong\u003e Features the \u003cstrong data-start=\"1207\" data-end=\"1231\"\u003eQuicksilver “Q” logo\u003c\/strong\u003e, a nod to genuine Mercury Marine craftsmanship.\u003c\/li\u003e\n\u003cli data-start=\"1284\" data-end=\"1384\"\u003e\n\u003cstrong data-start=\"1284\" data-end=\"1300\"\u003ePerformance:\u003c\/strong\u003e Meets or exceeds OEM specifications for sealing, fit, and temperature resistance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1386\" data-end=\"1389\"\u003e\n\u003ch3 data-start=\"1391\" data-end=\"1428\"\u003e\u003cstrong data-start=\"1395\" data-end=\"1426\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1431\" data-end=\"1558\"\u003eFits \u003cstrong data-start=\"1436\" data-end=\"1483\"\u003e4-inch O.D. through-transom exhaust systems\u003c\/strong\u003e commonly found on \u003cstrong data-start=\"1502\" data-end=\"1555\"\u003eMerCruiser-powered performance boats and cruisers\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli data-start=\"1561\" data-end=\"1672\"\u003eWorks with a wide range of \u003cstrong data-start=\"1588\" data-end=\"1616\"\u003eV6 and V8 marine engines\u003c\/strong\u003e equipped with Mercury or aftermarket exhaust systems.\u003c\/li\u003e\n\u003cli data-start=\"1675\" data-end=\"1769\"\u003eDesigned for boats running \u003cstrong data-start=\"1702\" data-end=\"1738\"\u003eBravo, Alpha, or TRS sterndrives\u003c\/strong\u003e with through-transom setups.\u003c\/li\u003e\n\u003cli data-start=\"1772\" data-end=\"1825\"\u003eSuitable for both \u003cstrong data-start=\"1790\" data-end=\"1822\"\u003efreshwater and saltwater use\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1827\" data-end=\"1830\"\u003e\n\u003ch3 data-start=\"1832\" data-end=\"1874\"\u003e\u003cstrong data-start=\"1836\" data-end=\"1872\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1875\" data-end=\"2231\"\u003eThe flapper might seem like a simple piece of rubber, but it plays a critical role in keeping your engine protected. It seals tightly when water pressure pushes against it, keeping exhaust gases moving out and water from sneaking in. The result is smoother operation, quieter idling, and better long-term protection for your exhaust valves and manifolds.\u003c\/p\u003e\n\u003cp data-start=\"2233\" data-end=\"2578\"\u003eMade from durable rubber and paired with a stainless clamp, it holds up under constant heat and exhaust flow. You’ll notice how well it stays seated, even after long runs at high speed or hours of cruising. It’s one of those small but vital parts that helps your system perform flawlessly while adding a bit of style with the Quicksilver logo.\u003c\/p\u003e\n\u003chr data-start=\"2580\" data-end=\"2583\"\u003e\n\u003ch3 data-start=\"2585\" data-end=\"2606\"\u003e\u003cstrong data-start=\"2589\" data-end=\"2604\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2607\" data-end=\"2999\"\u003eYou can find cheaper flappers out there, but they often don’t fit quite right or last as long. The \u003cstrong data-start=\"2706\" data-end=\"2729\"\u003eQuicksilver 12644A1\u003c\/strong\u003e is built to \u003cstrong data-start=\"2742\" data-end=\"2774\"\u003eMercury Marine OEM standards\u003c\/strong\u003e, which means you’re getting the same fit and function as the original equipment. That tight seal, precise sizing, and heat resistance are what keep your exhaust running efficiently — and your engine safe from water damage.\u003c\/p\u003e\n\u003cp data-start=\"3001\" data-end=\"3226\"\u003eWith OEM parts, you’re not just buying a replacement — you’re restoring your system to factory performance. It’s a simple, affordable upgrade that helps keep your boat running strong and sounding right, season after season.\u003c\/p\u003e\n\u003chr data-start=\"3228\" data-end=\"3231\"\u003e\n\u003ch3 data-start=\"3233\" data-end=\"3246\"\u003e\u003cstrong data-start=\"3237\" data-end=\"3244\"\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"3248\" data-end=\"3381\"\u003e\u003cstrong data-start=\"3248\" data-end=\"3308\"\u003eQ1: What size exhaust outlets does this flapper kit fit?\u003c\/strong\u003e\u003cbr data-start=\"3308\" data-end=\"3311\"\u003eIt fits \u003cstrong data-start=\"3319\" data-end=\"3378\"\u003e4-inch outside diameter through-transom exhaust outlets\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"3383\" data-end=\"3503\"\u003e\u003cstrong data-start=\"3383\" data-end=\"3413\"\u003eQ2: What comes in the kit?\u003c\/strong\u003e\u003cbr data-start=\"3413\" data-end=\"3416\"\u003eThe kit includes \u003cstrong data-start=\"3433\" data-end=\"3478\"\u003eone flapper and one stainless steel clamp\u003c\/strong\u003e for easy installation.\u003c\/p\u003e\n\u003cp data-start=\"3505\" data-end=\"3642\"\u003e\u003cstrong data-start=\"3505\" data-end=\"3561\"\u003eQ3: Can it be used in both freshwater and saltwater?\u003c\/strong\u003e\u003cbr data-start=\"3561\" data-end=\"3564\"\u003eYes — it’s designed for full marine exposure and resists corrosion and heat.\u003c\/p\u003e\n\u003cp data-start=\"3644\" data-end=\"3822\"\u003e\u003cstrong data-start=\"3644\" data-end=\"3705\"\u003eQ4: What makes this flapper better than aftermarket ones?\u003c\/strong\u003e\u003cbr data-start=\"3705\" data-end=\"3708\"\u003eIt’s an \u003cstrong data-start=\"3716\" data-end=\"3743\"\u003eOEM Mercury Marine part\u003c\/strong\u003e, molded to exact tolerances and made from high-temp, marine-grade materials.\u003c\/p\u003e\n\u003cp data-start=\"3824\" data-end=\"3948\"\u003e\u003cstrong data-start=\"3824\" data-end=\"3858\"\u003eQ5: Is installation difficult?\u003c\/strong\u003e\u003cbr data-start=\"3858\" data-end=\"3861\"\u003eNot at all. Most owners can install it in minutes with a screwdriver and basic tools.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46941504340259,"sku":"12644A1","price":38.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/12644A1_Main.jpg?v=1760631150","url":"https:\/\/partsvu.com\/en-mx\/products\/mercury-exhaust-flapper-4-in-o-d-12644a1","provider":"PartsVu","version":"1.0","type":"link"}