{"product_id":"mercury-outboard-water-pump-upper-housing-46-821351a3","title":"Mercury – Quicksilver 821351A3 Upper Water Pump Housing Repair Kit | Mercury 25–50HP FourStroke, BigFoot \u0026 Bodensee Outboards | 821351A3","description":"\u003cp data-start=\"0\" data-end=\"142\"\u003e\u003cstrong data-start=\"0\" data-end=\"140\"\u003eMercury – Quicksilver 821351A3 Upper Water Pump Housing Repair Kit | Mercury 25–50HP FourStroke, BigFoot \u0026amp; Bodensee Outboards | 821351A3\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"144\" data-end=\"147\"\u003e\n\u003ch3 data-start=\"149\" data-end=\"167\"\u003e\u003cstrong data-start=\"153\" data-end=\"165\"\u003eOverview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"168\" data-end=\"453\"\u003eWhen your outboard’s water pump starts losing pressure, it’s often the upper housing that needs attention. The \u003cstrong data-start=\"279\" data-end=\"339\"\u003eQuicksilver 821351A3 Upper Water Pump Housing Repair Kit\u003c\/strong\u003e restores full cooling efficiency in \u003cstrong data-start=\"376\" data-end=\"450\"\u003eMercury 25–50HP FourStroke carbureted, BigFoot, and Bodensee outboards\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"455\" data-end=\"719\"\u003eThis 3-piece OEM kit includes everything you need to repair the upper pump housing. It’s built to Mercury’s exact specs for a perfect fit, steady water flow, and dependable protection against overheating — so your motor runs cool and smooth, season after season.\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=\"840\"\u003e\n\u003cstrong data-start=\"751\" data-end=\"763\"\u003ePurpose:\u003c\/strong\u003e Repairs worn or damaged water pump housing to restore proper cooling flow.\u003c\/li\u003e\n\u003cli data-start=\"843\" data-end=\"945\"\u003e\n\u003cstrong data-start=\"843\" data-end=\"855\"\u003eFitment:\u003c\/strong\u003e For \u003cstrong data-start=\"860\" data-end=\"901\"\u003eMercury 25–50HP FourStroke carbureted\u003c\/strong\u003e, \u003cstrong data-start=\"903\" data-end=\"914\"\u003eBigFoot\u003c\/strong\u003e, and \u003cstrong data-start=\"920\" data-end=\"932\"\u003eBodensee\u003c\/strong\u003e outboards.\u003c\/li\u003e\n\u003cli data-start=\"948\" data-end=\"1046\"\u003e\n\u003cstrong data-start=\"948\" data-end=\"965\"\u003eKit Contents:\u003c\/strong\u003e 3-piece repair kit includes housing and seals required for upper pump service.\u003c\/li\u003e\n\u003cli data-start=\"1049\" data-end=\"1140\"\u003e\n\u003cstrong data-start=\"1049\" data-end=\"1066\"\u003eInstallation:\u003c\/strong\u003e Straightforward install with \u003cstrong data-start=\"1096\" data-end=\"1111\"\u003ebasic tools\u003c\/strong\u003e — no modifications needed.\u003c\/li\u003e\n\u003cli data-start=\"1143\" data-end=\"1242\"\u003e\n\u003cstrong data-start=\"1143\" data-end=\"1159\"\u003eOEM Quality:\u003c\/strong\u003e Designed to \u003cstrong data-start=\"1172\" data-end=\"1208\"\u003eMercury Marine factory standards\u003c\/strong\u003e for performance and durability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1244\" data-end=\"1247\"\u003e\n\u003ch3 data-start=\"1249\" data-end=\"1286\"\u003e\u003cstrong data-start=\"1253\" data-end=\"1284\"\u003eEngine \u0026amp; Boat Compatibility\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1289\" data-end=\"1338\"\u003eMercury 25–50HP FourStroke carbureted outboards\u003c\/li\u003e\n\u003cli data-start=\"1341\" data-end=\"1378\"\u003eMercury BigFoot and Bodensee models\u003c\/li\u003e\n\u003cli data-start=\"1381\" data-end=\"1437\"\u003eCommon on pontoons, runabouts, and small fishing boats\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1439\" data-end=\"1442\"\u003e\n\u003ch3 data-start=\"1444\" data-end=\"1486\"\u003e\u003cstrong data-start=\"1448\" data-end=\"1484\"\u003ePerformance \u0026amp; Practical Benefits\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1487\" data-end=\"1768\"\u003eThe \u003cstrong data-start=\"1491\" data-end=\"1507\"\u003e821351A3 kit\u003c\/strong\u003e restores tight sealing and proper flow in your outboard’s cooling system. Over time, heat and debris wear down the pump housing, reducing water pressure and risking overheating. This OEM replacement rebuilds that section so your cooling system runs like new.\u003c\/p\u003e\n\u003cp data-start=\"1770\" data-end=\"2006\"\u003eThe marine-grade materials resist corrosion and heat, keeping water flow steady in both fresh and saltwater conditions. Installing this kit is quick and straightforward, giving you reliable performance and peace of mind on every trip.\u003c\/p\u003e\n\u003chr data-start=\"2008\" data-end=\"2011\"\u003e\n\u003ch3 data-start=\"2013\" data-end=\"2034\"\u003e\u003cstrong data-start=\"2017\" data-end=\"2032\"\u003eWhy Buy OEM\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2035\" data-end=\"2276\"\u003eMercury’s OEM kits are engineered for precision and longevity — built to handle the vibration, heat, and corrosion of real boating conditions. Aftermarket housings often don’t seal correctly or use softer plastics that warp under pressure.\u003c\/p\u003e\n\u003cp data-start=\"2278\" data-end=\"2427\"\u003eA \u003cstrong data-start=\"2280\" data-end=\"2314\"\u003egenuine Quicksilver repair kit\u003c\/strong\u003e fits perfectly, flows properly, and lasts longer — keeping your outboard protected and performing at its best.\u003c\/p\u003e\n\u003chr data-start=\"2429\" data-end=\"2432\"\u003e\n\u003ch3 data-start=\"2434\" data-end=\"2447\"\u003e\u003cstrong data-start=\"2438\" data-end=\"2445\"\u003eFAQ\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2448\" data-end=\"2601\"\u003e\u003cstrong data-start=\"2448\" data-end=\"2502\"\u003eQ1: What engines fit the Quicksilver 821351A3 kit?\u003c\/strong\u003e\u003cbr data-start=\"2502\" data-end=\"2505\"\u003eA: It fits \u003cstrong data-start=\"2516\" data-end=\"2557\"\u003eMercury 25–50HP FourStroke carbureted\u003c\/strong\u003e, \u003cstrong data-start=\"2559\" data-end=\"2570\"\u003eBigFoot\u003c\/strong\u003e, and \u003cstrong data-start=\"2576\" data-end=\"2598\"\u003eBodensee outboards\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2603\" data-end=\"2743\"\u003e\u003cstrong data-start=\"2603\" data-end=\"2638\"\u003eQ2: What’s included in the kit?\u003c\/strong\u003e\u003cbr data-start=\"2638\" data-end=\"2641\"\u003eA: The kit includes \u003cstrong data-start=\"2661\" data-end=\"2685\"\u003ethree key components\u003c\/strong\u003e for upper housing repair, including seals and hardware.\u003c\/p\u003e\n\u003cp data-start=\"2745\" data-end=\"2862\"\u003e\u003cstrong data-start=\"2745\" data-end=\"2777\"\u003eQ3: Can I install it myself?\u003c\/strong\u003e\u003cbr data-start=\"2777\" data-end=\"2780\"\u003eA: Yes. It installs easily using common hand tools and a Mercury service manual.\u003c\/p\u003e\n\u003cp data-start=\"2864\" data-end=\"2999\"\u003e\u003cstrong data-start=\"2864\" data-end=\"2900\"\u003eQ4: Does this work in saltwater?\u003c\/strong\u003e\u003cbr data-start=\"2900\" data-end=\"2903\"\u003eA: Absolutely. It’s built from corrosion-resistant materials designed for marine environments.\u003c\/p\u003e\n\u003cp data-start=\"3001\" data-end=\"3151\"\u003e\u003cstrong data-start=\"3001\" data-end=\"3040\"\u003eQ5: Why OEM instead of aftermarket?\u003c\/strong\u003e\u003cbr data-start=\"3040\" data-end=\"3043\"\u003eA: OEM kits are made to Mercury’s exact tolerances — ensuring proper seal, fit, and long-term reliability.\u003c\/p\u003e","brand":"Mercury","offers":[{"title":"Default Title","offer_id":46940112781603,"sku":"46-821351A3","price":97.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0783\/7410\/9475\/files\/821351A3_Main.jpg?v=1760631233","url":"https:\/\/partsvu.com\/en-ca\/products\/mercury-outboard-water-pump-upper-housing-46-821351a3","provider":"PartsVu","version":"1.0","type":"link"}