{"product_id":"mercury-water-pump-base-assembly-46-812966a7","title":"Mercury – Quicksilver 812966A7 Water Pump Base Assembly | Mercury FourStroke 30–60HP Outboards | Reinforced Nylon | 812966A7","description":"\u003cp data-start=\"0\" data-end=\"130\"\u003e\u003cstrong data-start=\"0\" data-end=\"128\"\u003eMercury – Quicksilver 812966A7 Water Pump Base Assembly | Mercury FourStroke 30–60HP Outboards | Reinforced Nylon | 812966A7\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"132\" data-end=\"135\"\u003e\n\u003ch3 data-start=\"137\" data-end=\"155\"\u003e\u003cstrong data-start=\"141\" data-end=\"153\"\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"156\" data-end=\"568\"\u003eA dependable cooling system keeps your outboard running strong and protected from heat damage. The \u003cstrong data-start=\"255\" data-end=\"304\"\u003eQuicksilver 812966A7 Water Pump Base Assembly\u003c\/strong\u003e is built to restore that reliability in your \u003cstrong data-start=\"350\" data-end=\"389\"\u003eMercury FourStroke 30–60HP outboard\u003c\/strong\u003e. Whether you run an EFI 3-cylinder, a carbureted 4-cylinder, or anything in between, this OEM base assembly keeps water flowing smoothly through your engine’s cooling passages.\u003c\/p\u003e\n\u003cp data-start=\"570\" data-end=\"819\"\u003eIt’s made from \u003cstrong data-start=\"585\" data-end=\"605\"\u003ereinforced nylon\u003c\/strong\u003e for toughness and heat resistance, designed to handle years of vibration, water pressure, and temperature swings. A solid pump base means consistent cooling, less wear, and peace of mind every time you start up.\u003c\/p\u003e\n\u003chr data-start=\"821\" data-end=\"824\"\u003e\n\u003ch3 data-start=\"826\" data-end=\"848\"\u003e\u003cstrong data-start=\"830\" data-end=\"846\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"851\" data-end=\"969\"\u003e\n\u003cstrong data-start=\"851\" data-end=\"863\"\u003ePurpose:\u003c\/strong\u003e Replaces a worn or cracked water pump base to restore proper water circulation and prevent overheating.\u003c\/li\u003e\n\u003cli data-start=\"972\" data-end=\"1148\"\u003e\n\u003cstrong data-start=\"972\" data-end=\"984\"\u003eFitment:\u003c\/strong\u003e For \u003cstrong data-start=\"989\" data-end=\"1021\"\u003eMercury FourStroke outboards\u003c\/strong\u003e — \u003cstrong data-start=\"1024\" data-end=\"1050\"\u003e30\/40HP EFI 3-cylinder\u003c\/strong\u003e, \u003cstrong data-start=\"1052\" data-end=\"1076\"\u003e40HP Carb 3-cylinder\u003c\/strong\u003e, \u003cstrong data-start=\"1078\" data-end=\"1104\"\u003e40–60HP EFI 4-cylinder\u003c\/strong\u003e, and \u003cstrong data-start=\"1110\" data-end=\"1137\"\u003e40–60HP Carb 4-cylinder\u003c\/strong\u003e engines.\u003c\/li\u003e\n\u003cli data-start=\"1151\" data-end=\"1265\"\u003e\n\u003cstrong data-start=\"1151\" data-end=\"1168\"\u003eConstruction:\u003c\/strong\u003e Made from \u003cstrong data-start=\"1179\" data-end=\"1199\"\u003ereinforced nylon\u003c\/strong\u003e for strength, durability, and resistance to warping under heat.\u003c\/li\u003e\n\u003cli data-start=\"1268\" data-end=\"1383\"\u003e\n\u003cstrong data-start=\"1268\" data-end=\"1292\"\u003eIncluded Components:\u003c\/strong\u003e Comes complete with \u003cstrong data-start=\"1313\" data-end=\"1348\"\u003epump housing, seals, and O-ring\u003c\/strong\u003e for a ready-to-install assembly.\u003c\/li\u003e\n\u003cli data-start=\"1386\" data-end=\"1527\"\u003e\n\u003cstrong data-start=\"1386\" data-end=\"1402\"\u003eOEM Quality:\u003c\/strong\u003e Manufactured to meet or exceed \u003cstrong data-start=\"1434\" data-end=\"1475\"\u003eMercury Marine factory specifications\u003c\/strong\u003e for precise fit and reliable cooling performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1529\" data-end=\"1532\"\u003e\n\u003ch3 data-start=\"1534\" data-end=\"1571\"\u003e\u003cstrong data-start=\"1538\" data-end=\"1569\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1574\" data-end=\"1619\"\u003eMercury FourStroke 30\/40HP EFI (3-cylinder)\u003c\/li\u003e\n\u003cli data-start=\"1622\" data-end=\"1671\"\u003eMercury FourStroke 40HP Carbureted (3-cylinder)\u003c\/li\u003e\n\u003cli data-start=\"1674\" data-end=\"1719\"\u003eMercury FourStroke 40–60HP EFI (4-cylinder)\u003c\/li\u003e\n\u003cli data-start=\"1722\" data-end=\"1774\"\u003eMercury FourStroke 40–60HP Carbureted (4-cylinder)\u003c\/li\u003e\n\u003cli data-start=\"1777\" data-end=\"1846\"\u003eIdeal for small fishing boats, pontoons, runabouts, and inflatables\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1848\" data-end=\"1851\"\u003e\n\u003ch3 data-start=\"1853\" data-end=\"1895\"\u003e\u003cstrong data-start=\"1857\" data-end=\"1893\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1896\" data-end=\"2227\"\u003eThe \u003cstrong data-start=\"1900\" data-end=\"1937\"\u003e812966A7 Water Pump Base Assembly\u003c\/strong\u003e forms the foundation of your outboard’s cooling system. When it’s worn or cracked, your engine can lose pressure and circulation — leading to overheating and internal wear. Replacing it with this OEM assembly restores the tight seal and proper flow path Mercury designed into your motor.\u003c\/p\u003e\n\u003cp data-start=\"2229\" data-end=\"2587\"\u003eThe \u003cstrong data-start=\"2233\" data-end=\"2261\"\u003ereinforced nylon housing\u003c\/strong\u003e resists corrosion and distortion far better than older designs. With the included seals and O-ring, the entire unit installs cleanly and locks in a perfect seal for years of use. Once installed, you’ll notice better temperature stability, more reliable cooling at idle, and long-term confidence in your motor’s performance.\u003c\/p\u003e\n\u003chr data-start=\"2589\" data-end=\"2592\"\u003e\n\u003ch3 data-start=\"2594\" data-end=\"2615\"\u003e\u003cstrong data-start=\"2598\" data-end=\"2613\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2616\" data-end=\"2920\"\u003eMercury’s OEM cooling components are made to match your engine’s original tolerances and materials. Aftermarket bases often use lower-grade plastics that can soften under heat or leak around seals. This genuine Quicksilver assembly ensures the pump’s geometry, fit, and flow remain exactly as intended.\u003c\/p\u003e\n\u003cp data-start=\"2922\" data-end=\"3130\"\u003eWith OEM, you’re not just replacing a part — you’re maintaining your engine’s designed efficiency and longevity. It’s the difference between a quick fix and a lasting solution that protects your investment.\u003c\/p\u003e\n\u003chr data-start=\"3132\" data-end=\"3135\"\u003e\n\u003ch3 data-start=\"3137\" data-end=\"3150\"\u003e\u003cstrong data-start=\"3141\" data-end=\"3148\"\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"3151\" data-end=\"3328\"\u003e\u003cstrong data-start=\"3151\" data-end=\"3216\"\u003eQ1: Which engines use the Quicksilver 812966A7 base assembly?\u003c\/strong\u003e\u003cbr data-start=\"3216\" data-end=\"3219\"\u003eA: It fits \u003cstrong data-start=\"3230\" data-end=\"3270\"\u003eMercury FourStroke 30–60HP outboards\u003c\/strong\u003e, including 3- and 4-cylinder EFI and carbureted models.\u003c\/p\u003e\n\u003cp data-start=\"3330\" data-end=\"3469\"\u003e\u003cstrong data-start=\"3330\" data-end=\"3369\"\u003eQ2: What’s included in the package?\u003c\/strong\u003e\u003cbr data-start=\"3369\" data-end=\"3372\"\u003eA: The assembly includes the \u003cstrong data-start=\"3401\" data-end=\"3442\"\u003ewater pump housing, seals, and O-ring\u003c\/strong\u003e, ready for installation.\u003c\/p\u003e\n\u003cp data-start=\"3471\" data-end=\"3620\"\u003e\u003cstrong data-start=\"3471\" data-end=\"3509\"\u003eQ3: What material is it made from?\u003c\/strong\u003e\u003cbr data-start=\"3509\" data-end=\"3512\"\u003eA: It’s made from \u003cstrong data-start=\"3530\" data-end=\"3550\"\u003ereinforced nylon\u003c\/strong\u003e, chosen for its strength, corrosion resistance, and heat stability.\u003c\/p\u003e\n\u003cp data-start=\"3622\" data-end=\"3777\"\u003e\u003cstrong data-start=\"3622\" data-end=\"3674\"\u003eQ4: How often should the pump base be inspected?\u003c\/strong\u003e\u003cbr data-start=\"3674\" data-end=\"3677\"\u003eA: Inspect it during impeller replacement or any cooling system service — usually every 2–3 years.\u003c\/p\u003e\n\u003cp data-start=\"3779\" data-end=\"3928\"\u003e\u003cstrong data-start=\"3779\" data-end=\"3809\"\u003eQ5: Is it easy to install?\u003c\/strong\u003e\u003cbr data-start=\"3809\" data-end=\"3812\"\u003eA: Yes. With basic tools and your service manual, the replacement process is straightforward for most boat owners.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46940113142051,"sku":"46-812966A7","price":71.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/812966A7_Main.jpg?v=1760631219","url":"https:\/\/partsvu.com\/en-au\/products\/mercury-water-pump-base-assembly-46-812966a7","provider":"PartsVu","version":"1.0","type":"link"}