{"product_id":"mercury-gasket-27-430331","title":"Mercury – Quicksilver Gear Housing Gasket | Lower Unit Seal | Marine Composite | 430331","description":"\u003cp data-start=\"0\" data-end=\"93\"\u003e\u003cstrong data-start=\"0\" data-end=\"91\"\u003eMercury – Quicksilver Gear Housing Gasket | Lower Unit Seal | Marine Composite | 430331\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"95\" data-end=\"98\"\u003e\n\u003ch3 data-start=\"100\" data-end=\"118\"\u003e\u003cstrong data-start=\"104\" data-end=\"116\"\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"119\" data-end=\"704\"\u003eA good seal means a healthy drive. The \u003cstrong data-start=\"158\" data-end=\"215\"\u003eMercury Marine 430331 Quicksilver Gear Housing Gasket\u003c\/strong\u003e keeps water out and gear oil in, ensuring your lower unit stays properly lubricated and protected. Built to factory specs, this gasket fits a wide range of \u003cstrong data-start=\"372\" data-end=\"415\"\u003eMercury, Mariner, and MerCruiser drives\u003c\/strong\u003e, including \u003cstrong data-start=\"427\" data-end=\"482\"\u003eAlpha One Gen II sterndrives and 40–300HP outboards\u003c\/strong\u003e. Made from durable, marine-grade material, it’s designed to handle pressure, vibration, and temperature changes without shrinking or leaking — giving your gearcase the protection it needs to perform season after season.\u003c\/p\u003e\n\u003chr data-start=\"706\" data-end=\"709\"\u003e\n\u003ch3 data-start=\"711\" data-end=\"733\"\u003e\u003cstrong data-start=\"715\" data-end=\"731\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"736\" data-end=\"819\"\u003e\n\u003cstrong data-start=\"736\" data-end=\"748\"\u003ePurpose:\u003c\/strong\u003e Seals the gear housing to prevent leaks and keep gear oil contained.\u003c\/li\u003e\n\u003cli data-start=\"822\" data-end=\"913\"\u003e\n\u003cstrong data-start=\"822\" data-end=\"835\"\u003eMaterial:\u003c\/strong\u003e Made from \u003cstrong data-start=\"846\" data-end=\"873\"\u003emarine-tested composite\u003c\/strong\u003e that resists heat, oil, and pressure.\u003c\/li\u003e\n\u003cli data-start=\"916\" data-end=\"1013\"\u003e\n\u003cstrong data-start=\"916\" data-end=\"932\"\u003ePerformance:\u003c\/strong\u003e Maintains a watertight seal for reliable lubrication and corrosion prevention.\u003c\/li\u003e\n\u003cli data-start=\"1016\" data-end=\"1107\"\u003e\n\u003cstrong data-start=\"1016\" data-end=\"1027\"\u003eDesign:\u003c\/strong\u003e Precision-cut to \u003cstrong data-start=\"1045\" data-end=\"1075\"\u003eMercury OEM specifications\u003c\/strong\u003e for a perfect fit every time.\u003c\/li\u003e\n\u003cli data-start=\"1110\" data-end=\"1205\"\u003e\n\u003cstrong data-start=\"1110\" data-end=\"1125\"\u003eDurability:\u003c\/strong\u003e Withstands marine stress, from high-speed vibration to heavy load conditions.\u003c\/li\u003e\n\u003cli data-start=\"1208\" data-end=\"1323\"\u003e\n\u003cstrong data-start=\"1208\" data-end=\"1226\"\u003eCompatibility:\u003c\/strong\u003e Fits a wide range of \u003cstrong data-start=\"1248\" data-end=\"1308\"\u003eMerCruiser and Mercury\/Mariner outboards and sterndrives\u003c\/strong\u003e (see below).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1325\" data-end=\"1328\"\u003e\n\u003ch3 data-start=\"1330\" data-end=\"1367\"\u003e\u003cstrong data-start=\"1334\" data-end=\"1365\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1370\" data-end=\"1415\"\u003e\u003cstrong data-start=\"1370\" data-end=\"1413\"\u003eMerCruiser Alpha One Gen II sterndrives\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1418\" data-end=\"1476\"\u003e\u003cstrong data-start=\"1418\" data-end=\"1474\"\u003eMercury\/Mariner 40–60HP FourStroke BigFoot outboards\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1479\" data-end=\"1570\"\u003e\u003cstrong data-start=\"1479\" data-end=\"1568\"\u003eMercury 60HP (3-cylinder) BigFoot and 75–115HP TwoStroke (USA A996142+, BEL 9483121+)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1573\" data-end=\"1637\"\u003e\u003cstrong data-start=\"1573\" data-end=\"1635\"\u003e75–115HP EFI FourStroke and 150HP EFI FourStroke outboards\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1640\" data-end=\"1703\"\u003e\u003cstrong data-start=\"1640\" data-end=\"1701\"\u003eV-200 (3.0L) DFI outboards and 135–300HP Verado outboards\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"1706\" data-end=\"1738\"\u003e\u003cstrong data-start=\"1706\" data-end=\"1736\"\u003eV-225\/250 (3.0L) outboards\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1740\" data-end=\"1904\"\u003eThis gasket is used across a variety of boats — from \u003cstrong data-start=\"1793\" data-end=\"1841\"\u003ebass boats and pontoons to offshore cruisers\u003c\/strong\u003e — and is suitable for both \u003cstrong data-start=\"1869\" data-end=\"1897\"\u003efreshwater and saltwater\u003c\/strong\u003e use.\u003c\/p\u003e\n\u003chr data-start=\"1906\" data-end=\"1909\"\u003e\n\u003ch3 data-start=\"1911\" data-end=\"1954\"\u003e\u003cstrong data-start=\"1915\" data-end=\"1952\"\u003ePerformance \u0026amp; Real-World Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1955\" data-end=\"2209\"\u003eThe \u003cstrong data-start=\"1959\" data-end=\"1976\"\u003e430331 gasket\u003c\/strong\u003e keeps your gear housing sealed tight, protecting critical internal components from water intrusion and gear oil loss. A strong, even seal ensures smooth operation, proper lubrication, and long-term reliability for your lower unit.\u003c\/p\u003e\n\u003cp data-start=\"2211\" data-end=\"2477\"\u003eOver time, older gaskets can compress, harden, or fail under heat and vibration, allowing leaks that can lead to expensive damage. Replacing it during maintenance helps maintain peak performance and peace of mind — so you can focus on the water, not your gearcase.\u003c\/p\u003e\n\u003chr data-start=\"2479\" data-end=\"2482\"\u003e\n\u003ch3 data-start=\"2484\" data-end=\"2516\"\u003e\u003cstrong data-start=\"2488\" data-end=\"2514\"\u003eWhy Choose Mercury OEM\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2517\" data-end=\"2751\"\u003eThe \u003cstrong data-start=\"2521\" data-end=\"2543\"\u003eQuicksilver 430331\u003c\/strong\u003e is a \u003cstrong data-start=\"2549\" data-end=\"2580\"\u003egenuine Mercury Marine part\u003c\/strong\u003e, made from materials tested for marine pressure and temperature extremes. Generic gaskets can warp, tear, or fail to line up with Mercury’s precision-machined surfaces.\u003c\/p\u003e\n\u003cp data-start=\"2753\" data-end=\"3027\"\u003eOEM gaskets ensure proper sealing, exact fit, and long-term reliability — protecting your lower unit and maintaining your factory warranty. Mercury builds its gaskets to handle the harshest marine environments, giving your drive the same confidence it had when it was new.\u003c\/p\u003e\n\u003chr data-start=\"3029\" data-end=\"3032\"\u003e\n\u003ch3 data-start=\"3034\" data-end=\"3047\"\u003e\u003cstrong data-start=\"3038\" data-end=\"3045\"\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"3049\" data-end=\"3241\"\u003e\u003cstrong data-start=\"3049\" data-end=\"3102\"\u003eQ1: What engines and drives does this gasket fit?\u003c\/strong\u003e\u003cbr data-start=\"3102\" data-end=\"3105\"\u003eIt fits \u003cstrong data-start=\"3113\" data-end=\"3144\"\u003eMerCruiser Alpha One Gen II\u003c\/strong\u003e, \u003cstrong data-start=\"3146\" data-end=\"3184\"\u003eMercury\/Mariner 40–300HP outboards\u003c\/strong\u003e, and various EFI, DFI, and Verado models listed above.\u003c\/p\u003e\n\u003cp data-start=\"3243\" data-end=\"3371\"\u003e\u003cstrong data-start=\"3243\" data-end=\"3279\"\u003eQ2: What’s the gasket made from?\u003c\/strong\u003e\u003cbr data-start=\"3279\" data-end=\"3282\"\u003eIt’s made from a \u003cstrong data-start=\"3299\" data-end=\"3325\"\u003emarine-grade composite\u003c\/strong\u003e designed to resist oil, heat, and pressure.\u003c\/p\u003e\n\u003cp data-start=\"3373\" data-end=\"3530\"\u003e\u003cstrong data-start=\"3373\" data-end=\"3414\"\u003eQ3: Why should I replace this gasket?\u003c\/strong\u003e\u003cbr data-start=\"3414\" data-end=\"3417\"\u003eA worn or leaking gasket can allow water into the gearcase or cause oil loss — both can lead to serious damage.\u003c\/p\u003e\n\u003cp data-start=\"3532\" data-end=\"3649\"\u003e\u003cstrong data-start=\"3532\" data-end=\"3568\"\u003eQ4: Can it handle saltwater use?\u003c\/strong\u003e\u003cbr data-start=\"3568\" data-end=\"3571\"\u003eYes — it’s designed to perform in both \u003cstrong data-start=\"3610\" data-end=\"3633\"\u003esalt and freshwater\u003c\/strong\u003e environments.\u003c\/p\u003e\n\u003cp data-start=\"3651\" data-end=\"3823\"\u003e\u003cstrong data-start=\"3651\" data-end=\"3690\"\u003eQ5: Why OEM instead of aftermarket?\u003c\/strong\u003e\u003cbr data-start=\"3690\" data-end=\"3693\"\u003eMercury OEM parts match the exact shape and strength of your drive housing, ensuring proper sealing and long-lasting protection.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":45626575159587,"sku":"27-430331","price":7.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/27-430331.jpg?v=1698814881","url":"https:\/\/partsvu.com\/en-ca\/products\/mercury-gasket-27-430331","provider":"PartsVu","version":"1.0","type":"link"}