{"product_id":"diaphragm-144791","title":"Mercury – Quicksilver Exhaust Manifold and Plate Diaphragm | Exhaust System Component | Heat-Resistant Composite | 144791","description":"\u003cp data-start=\"0\" data-end=\"127\"\u003e\u003cstrong data-start=\"0\" data-end=\"125\"\u003eMercury – Quicksilver Exhaust Manifold and Plate Diaphragm | Exhaust System Component | Heat-Resistant Composite | 144791\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"129\" data-end=\"132\"\u003e\n\u003ch3 data-start=\"134\" data-end=\"152\"\u003e\u003cstrong data-start=\"138\" data-end=\"150\"\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"153\" data-end=\"688\"\u003eWhen your outboard is working hard, the exhaust system takes a beating. The \u003cstrong data-start=\"229\" data-end=\"311\"\u003eMercury Marine 144791 Quicksilver Exhaust Manifold and Exhaust Plate Diaphragm\u003c\/strong\u003e helps keep that system sealed, balanced, and breathing the way it should. Built for \u003cstrong data-start=\"396\" data-end=\"458\"\u003eMercury and Mariner 105–225 horsepower TwoStroke outboards\u003c\/strong\u003e, this part maintains proper exhaust pressure and cooling flow inside your engine’s 2.5L powerhead. It’s one of those small, critical components that keep performance engines running smooth, cool, and consistent trip after trip.\u003c\/p\u003e\n\u003chr data-start=\"690\" data-end=\"693\"\u003e\n\u003ch3 data-start=\"695\" data-end=\"717\"\u003e\u003cstrong data-start=\"699\" data-end=\"715\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"720\" data-end=\"832\"\u003e\n\u003cstrong data-start=\"720\" data-end=\"732\"\u003ePurpose:\u003c\/strong\u003e Maintains exhaust pressure balance between the manifold and plate for efficient flow and cooling.\u003c\/li\u003e\n\u003cli data-start=\"835\" data-end=\"950\"\u003e\n\u003cstrong data-start=\"835\" data-end=\"848\"\u003eMaterial:\u003c\/strong\u003e Constructed from \u003cstrong data-start=\"866\" data-end=\"894\"\u003eheat-resistant composite\u003c\/strong\u003e designed to endure marine temperatures and vibration.\u003c\/li\u003e\n\u003cli data-start=\"953\" data-end=\"1071\"\u003e\n\u003cstrong data-start=\"953\" data-end=\"971\"\u003eDesign Detail:\u003c\/strong\u003e Precision molded to \u003cstrong data-start=\"992\" data-end=\"1029\"\u003eOEM Mercury Marine specifications\u003c\/strong\u003e for a perfect fit and reliable sealing.\u003c\/li\u003e\n\u003cli data-start=\"1074\" data-end=\"1173\"\u003e\n\u003cstrong data-start=\"1074\" data-end=\"1089\"\u003eDurability:\u003c\/strong\u003e Resists cracking, warping, and chemical wear from exhaust gases and fuel residue.\u003c\/li\u003e\n\u003cli data-start=\"1176\" data-end=\"1332\"\u003e\n\u003cstrong data-start=\"1176\" data-end=\"1194\"\u003eCompatibility:\u003c\/strong\u003e Fits \u003cstrong data-start=\"1200\" data-end=\"1319\"\u003eMercury and Mariner 105–225HP TwoStroke EFI, DFI, Laser, Magnum II \u0026amp; III, Pro Max, SuperMAG, Jet, and Pro XS (2.5L)\u003c\/strong\u003e outboards.\u003c\/li\u003e\n\u003cli data-start=\"1335\" data-end=\"1466\"\u003e\n\u003cstrong data-start=\"1335\" data-end=\"1351\"\u003ePerformance:\u003c\/strong\u003e Ensures consistent exhaust scavenging, helping maintain smooth throttle response and optimal engine temperature.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1468\" data-end=\"1471\"\u003e\n\u003ch3 data-start=\"1473\" data-end=\"1510\"\u003e\u003cstrong data-start=\"1477\" data-end=\"1508\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1513\" data-end=\"1614\"\u003eDesigned for \u003cstrong data-start=\"1526\" data-end=\"1569\"\u003eMercury and Mariner TwoStroke outboards\u003c\/strong\u003e from \u003cstrong data-start=\"1575\" data-end=\"1600\"\u003e105HP to 225HP (2.5L)\u003c\/strong\u003e, including:\u003c\/li\u003e\n\u003cli data-start=\"1619\" data-end=\"1643\"\u003e\u003cstrong data-start=\"1619\" data-end=\"1641\"\u003eEFI and DFI models\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1648\" data-end=\"1676\"\u003e\u003cstrong data-start=\"1648\" data-end=\"1674\"\u003eLaser, Magnum II \u0026amp; III\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1681\" data-end=\"1730\"\u003e\n\u003cstrong data-start=\"1681\" data-end=\"1719\"\u003ePro Max, SuperMAG, Jet, and Pro XS\u003c\/strong\u003e variants\u003cbr\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1733\" data-end=\"1843\"\u003eCommon on \u003cstrong data-start=\"1743\" data-end=\"1805\"\u003ebass boats, performance hulls, and high-output sport boats\u003c\/strong\u003e that run Mercury’s 2.5L powerheads.\u003c\/li\u003e\n\u003cli data-start=\"1846\" data-end=\"1904\"\u003eWorks in both \u003cstrong data-start=\"1860\" data-end=\"1888\"\u003efreshwater and saltwater\u003c\/strong\u003e applications.\u003c\/li\u003e\n\u003cli data-start=\"1907\" data-end=\"1980\"\u003eRefer to your \u003cstrong data-start=\"1921\" data-end=\"1950\"\u003eowner’s or service manual\u003c\/strong\u003e for model-specific fitment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1982\" data-end=\"1985\"\u003e\n\u003ch3 data-start=\"1987\" data-end=\"2029\"\u003e\u003cstrong data-start=\"1991\" data-end=\"2027\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2030\" data-end=\"2358\"\u003eThis diaphragm helps your engine breathe correctly, managing exhaust backpressure to keep power delivery steady. It also helps regulate cooling water flow in the exhaust passages, preventing overheating under sustained load. The composite material is built to handle intense heat and pressure without losing its shape or seal.\u003c\/p\u003e\n\u003cp data-start=\"2360\" data-end=\"2676\"\u003eReplacing a worn or cracked diaphragm restores smooth idle, crisp throttle response, and consistent midrange performance. The difference shows up in quieter operation and fewer fluctuations when you’re running at speed. It’s a small part that has a big influence on how your outboard feels and performs day to day.\u003c\/p\u003e\n\u003chr data-start=\"2678\" data-end=\"2681\"\u003e\n\u003ch3 data-start=\"2683\" data-end=\"2704\"\u003e\u003cstrong data-start=\"2687\" data-end=\"2702\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2705\" data-end=\"3096\"\u003eAftermarket exhaust components can vary in thickness or material quality, which can throw off your engine’s tuning and exhaust balance. The \u003cstrong data-start=\"2845\" data-end=\"2867\"\u003eQuicksilver 144791\u003c\/strong\u003e is a \u003cstrong data-start=\"2873\" data-end=\"2904\"\u003egenuine Mercury Marine part\u003c\/strong\u003e, built from materials tested specifically for high-performance 2.5L Mercury engines. Its fit, flexibility, and heat resistance match the factory part exactly — no guesswork, no compromises.\u003c\/p\u003e\n\u003cp data-start=\"3098\" data-end=\"3332\"\u003eMercury’s OEM design ensures consistent backpressure and precise sealing, protecting your engine from leaks and uneven performance. For those who rely on their outboard to run hard and run right, OEM isn’t optional — it’s essential.\u003c\/p\u003e\n\u003chr data-start=\"3334\" data-end=\"3337\"\u003e\n\u003ch3 data-start=\"3339\" data-end=\"3352\"\u003e\u003cstrong data-start=\"3343\" data-end=\"3350\"\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"3354\" data-end=\"3537\"\u003e\u003cstrong data-start=\"3354\" data-end=\"3395\"\u003eQ1: Which engines use this diaphragm?\u003c\/strong\u003e\u003cbr data-start=\"3395\" data-end=\"3398\"\u003eIt fits \u003cstrong data-start=\"3406\" data-end=\"3464\"\u003eMercury and Mariner 105–225HP TwoStroke 2.5L outboards\u003c\/strong\u003e, including EFI, DFI, Laser, Pro Max, SuperMAG, Jet, and Pro XS models.\u003c\/p\u003e\n\u003cp data-start=\"3539\" data-end=\"3721\"\u003e\u003cstrong data-start=\"3539\" data-end=\"3596\"\u003eQ2: What makes it different from aftermarket options?\u003c\/strong\u003e\u003cbr data-start=\"3596\" data-end=\"3599\"\u003eIt’s built to \u003cstrong data-start=\"3613\" data-end=\"3640\"\u003eMercury’s OEM standards\u003c\/strong\u003e, using heat-resistant materials that won’t warp or degrade under exhaust heat.\u003c\/p\u003e\n\u003cp data-start=\"3723\" data-end=\"3872\"\u003e\u003cstrong data-start=\"3723\" data-end=\"3771\"\u003eQ3: How can I confirm fitment for my engine?\u003c\/strong\u003e\u003cbr data-start=\"3771\" data-end=\"3774\"\u003eCheck your \u003cstrong data-start=\"3785\" data-end=\"3803\"\u003eowner’s manual\u003c\/strong\u003e or match your existing part to \u003cstrong data-start=\"3835\" data-end=\"3845\"\u003e144791\u003c\/strong\u003e to verify compatibility.\u003c\/p\u003e\n\u003cp data-start=\"3874\" data-end=\"4016\"\u003e\u003cstrong data-start=\"3874\" data-end=\"3910\"\u003eQ4: Can it handle saltwater use?\u003c\/strong\u003e\u003cbr data-start=\"3910\" data-end=\"3913\"\u003eYes. It’s designed to resist corrosion and maintain sealing in both salt and freshwater environments.\u003c\/p\u003e\n\u003cp data-start=\"4018\" data-end=\"4160\"\u003e\u003cstrong data-start=\"4018\" data-end=\"4058\"\u003eQ5: Is installation straightforward?\u003c\/strong\u003e\u003cbr data-start=\"4058\" data-end=\"4061\"\u003eYes. Follow your service manual for torque and gasket replacement instructions during reassembly.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46941394731299,"sku":"144791","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/144791_1.jpg?v=1761159953","url":"https:\/\/partsvu.com\/en-au\/products\/diaphragm-144791","provider":"PartsVu","version":"1.0","type":"link"}