{"product_id":"mercury-water-pump-base-assembly-46-821307a2","title":"Mercury – Quicksilver 821307A2 Water Pump Base Kit | Mercury 25–50HP Outboards | 821307A2","description":"\u003cp data-start=\"0\" data-end=\"95\"\u003e\u003cstrong data-start=\"0\" data-end=\"93\"\u003eMercury – Quicksilver 821307A2 Water Pump Base Kit | Mercury 25–50HP Outboards | 821307A2\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"97\" data-end=\"100\"\u003e\n\u003ch3 data-start=\"102\" data-end=\"120\"\u003e\u003cstrong data-start=\"106\" data-end=\"118\"\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"121\" data-end=\"392\"\u003eWhen your outboard’s cooling system starts losing pressure or leaking at the base, this is the fix. The \u003cstrong data-start=\"225\" data-end=\"269\"\u003eQuicksilver 821307A2 Water Pump Base Kit\u003c\/strong\u003e restores proper sealing and flow in \u003cstrong data-start=\"306\" data-end=\"335\"\u003eMercury 25–50HP outboards\u003c\/strong\u003e, keeping your engine running at the right temperature.\u003c\/p\u003e\n\u003cp data-start=\"394\" data-end=\"686\"\u003eMade from \u003cstrong data-start=\"404\" data-end=\"448\"\u003ereinforced nylon with an integrated seal\u003c\/strong\u003e, this OEM base is built for strength, heat resistance, and a perfect fit. It’s a direct replacement for a wide range of Mercury models, from 25HP carbs to 50HP BigFoot and Jet versions — keeping your cooling system tight and efficient.\u003c\/p\u003e\n\u003chr data-start=\"688\" data-end=\"691\"\u003e\n\u003ch3 data-start=\"693\" data-end=\"715\"\u003e\u003cstrong data-start=\"697\" data-end=\"713\"\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"718\" data-end=\"819\"\u003e\n\u003cstrong data-start=\"718\" data-end=\"730\"\u003ePurpose:\u003c\/strong\u003e Replaces a worn water pump base to restore full cooling performance and prevent leaks.\u003c\/li\u003e\n\u003cli data-start=\"822\" data-end=\"1346\"\u003e\n\u003cstrong data-start=\"822\" data-end=\"834\"\u003eFitment:\u003c\/strong\u003e Fits \u003cstrong data-start=\"840\" data-end=\"881\"\u003eMercury 25HP carb (0G590000–1B344298)\u003c\/strong\u003e, \u003cstrong data-start=\"883\" data-end=\"921\"\u003e30\/40HP 2-cylinder (0G055314 \u0026amp; up)\u003c\/strong\u003e, \u003cstrong data-start=\"923\" data-end=\"967\"\u003e30HP carb 3-cylinder (0G760300–1B226999)\u003c\/strong\u003e, \u003cstrong data-start=\"969\" data-end=\"1012\"\u003e30HP EFI 3-cylinder (0T409000–1B226999)\u003c\/strong\u003e, \u003cstrong data-start=\"1014\" data-end=\"1057\"\u003e30HP Jet 3-cylinder (0G590000–0T408999)\u003c\/strong\u003e, \u003cstrong data-start=\"1059\" data-end=\"1098\"\u003e40HP 3-cylinder (0G590000–1B209735)\u003c\/strong\u003e, \u003cstrong data-start=\"1100\" data-end=\"1142\"\u003e40\/50HP (1998–1999; 0E288000–0E369299)\u003c\/strong\u003e, \u003cstrong data-start=\"1144\" data-end=\"1177\"\u003e40HP carb (0G231123–1B344306)\u003c\/strong\u003e, \u003cstrong data-start=\"1179\" data-end=\"1222\"\u003e40HP EFI 3-cylinder (0T409000–1B355027)\u003c\/strong\u003e, \u003cstrong data-start=\"1224\" data-end=\"1240\"\u003e45\/50HP carb\u003c\/strong\u003e, \u003cstrong data-start=\"1242\" data-end=\"1283\"\u003e50HP BigFoot carb (0G231123–0T178499)\u003c\/strong\u003e, and \u003cstrong data-start=\"1289\" data-end=\"1343\"\u003e50HP 3-cylinder (0G590000–0T979999; 1B000001 \u0026amp; up)\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli data-start=\"1349\" data-end=\"1461\"\u003e\n\u003cstrong data-start=\"1349\" data-end=\"1366\"\u003eConstruction:\u003c\/strong\u003e Made from \u003cstrong data-start=\"1377\" data-end=\"1397\"\u003ereinforced nylon\u003c\/strong\u003e with an \u003cstrong data-start=\"1406\" data-end=\"1425\"\u003eintegrated seal\u003c\/strong\u003e for durability and tight fitment.\u003c\/li\u003e\n\u003cli data-start=\"1464\" data-end=\"1524\"\u003e\n\u003cstrong data-start=\"1464\" data-end=\"1477\"\u003eContents:\u003c\/strong\u003e Includes \u003cstrong data-start=\"1487\" data-end=\"1506\"\u003ewater pump base\u003c\/strong\u003e and \u003cstrong data-start=\"1511\" data-end=\"1521\"\u003eO-ring\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli data-start=\"1527\" data-end=\"1621\"\u003e\n\u003cstrong data-start=\"1527\" data-end=\"1543\"\u003eOEM Quality:\u003c\/strong\u003e Built to \u003cstrong data-start=\"1553\" data-end=\"1589\"\u003eMercury Marine factory standards\u003c\/strong\u003e for long-lasting reliability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1623\" data-end=\"1626\"\u003e\n\u003ch3 data-start=\"1628\" data-end=\"1665\"\u003e\u003cstrong data-start=\"1632\" data-end=\"1663\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1668\" data-end=\"1720\"\u003eMercury 25–50HP carbureted, EFI, and Jet outboards\u003c\/li\u003e\n\u003cli data-start=\"1723\" data-end=\"1790\"\u003eCommon on small fishing boats, pontoons, and light-duty runabouts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1792\" data-end=\"1795\"\u003e\n\u003ch3 data-start=\"1797\" data-end=\"1839\"\u003e\u003cstrong data-start=\"1801\" data-end=\"1837\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1840\" data-end=\"2052\"\u003eThe \u003cstrong data-start=\"1844\" data-end=\"1865\"\u003e821307A2 base kit\u003c\/strong\u003e restores the solid foundation your water pump needs for proper pressure and cooling flow. A worn base can cause water leaks or low flow, leading to overheating and reduced engine life.\u003c\/p\u003e\n\u003cp data-start=\"2054\" data-end=\"2290\"\u003eThe reinforced nylon material holds up to heat, pressure, and vibration without cracking or warping. With the included O-ring and seal, you’ll get a tight, leak-free fit that keeps your cooling system efficient and reliable for years.\u003c\/p\u003e\n\u003chr data-start=\"2292\" data-end=\"2295\"\u003e\n\u003ch3 data-start=\"2297\" data-end=\"2318\"\u003e\u003cstrong data-start=\"2301\" data-end=\"2316\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2319\" data-end=\"2559\"\u003eMercury’s OEM components are made to exact tolerances — every piece fits precisely and lasts longer under marine conditions. Aftermarket parts often use lower-grade plastics or seals that can deform, leading to leaks or premature failure.\u003c\/p\u003e\n\u003cp data-start=\"2561\" data-end=\"2746\"\u003eA \u003cstrong data-start=\"2563\" data-end=\"2595\"\u003egenuine Quicksilver base kit\u003c\/strong\u003e ensures you’re using parts tested by the same engineers who designed your outboard’s cooling system. It’s a perfect fit and long-term peace of mind.\u003c\/p\u003e\n\u003chr data-start=\"2748\" data-end=\"2751\"\u003e\n\u003ch3 data-start=\"2753\" data-end=\"2766\"\u003e\u003cstrong data-start=\"2757\" data-end=\"2764\"\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2767\" data-end=\"2934\"\u003e\u003cstrong data-start=\"2767\" data-end=\"2821\"\u003eQ1: What engines fit the Quicksilver 821307A2 kit?\u003c\/strong\u003e\u003cbr data-start=\"2821\" data-end=\"2824\"\u003eA: It fits \u003cstrong data-start=\"2835\" data-end=\"2854\"\u003eMercury 25–50HP\u003c\/strong\u003e carbureted, EFI, and Jet outboards, including the serial ranges listed above.\u003c\/p\u003e\n\u003cp data-start=\"2936\" data-end=\"3024\"\u003e\u003cstrong data-start=\"2936\" data-end=\"2960\"\u003eQ2: What’s included?\u003c\/strong\u003e\u003cbr data-start=\"2960\" data-end=\"2963\"\u003eA: One \u003cstrong data-start=\"2970\" data-end=\"3006\"\u003ereinforced nylon water pump base\u003c\/strong\u003e and \u003cstrong data-start=\"3011\" data-end=\"3021\"\u003eO-ring\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"3026\" data-end=\"3163\"\u003e\u003cstrong data-start=\"3026\" data-end=\"3066\"\u003eQ3: Why replace the water pump base?\u003c\/strong\u003e\u003cbr data-start=\"3066\" data-end=\"3069\"\u003eA: A worn or cracked base can cause leaks or poor water pressure, leading to cooling issues.\u003c\/p\u003e\n\u003cp data-start=\"3165\" data-end=\"3276\"\u003e\u003cstrong data-start=\"3165\" data-end=\"3197\"\u003eQ4: Can I install it myself?\u003c\/strong\u003e\u003cbr data-start=\"3197\" data-end=\"3200\"\u003eA: Yes. It’s a direct replacement that installs easily using common tools.\u003c\/p\u003e\n\u003cp data-start=\"3278\" data-end=\"3441\"\u003e\u003cstrong data-start=\"3278\" data-end=\"3318\"\u003eQ5: Why choose OEM over aftermarket?\u003c\/strong\u003e\u003cbr data-start=\"3318\" data-end=\"3321\"\u003eA: OEM parts ensure perfect sealing, correct material strength, and the durability Mercury engines were built to have.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46940112978211,"sku":"46-821307A2","price":74.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/821307A2_Main.jpg?v=1760631210","url":"https:\/\/partsvu.com\/en-ca\/products\/mercury-water-pump-base-assembly-46-821307a2","provider":"PartsVu","version":"1.0","type":"link"}