{"product_id":"sierra-marine-water-pump-kit-18-3390","title":"Sierra Marine Water Pump Kit 18-3390 – Johnson \/ Evinrude 85-300HP V4 V6 Cooling System Rebuild","description":"\u003cp data-start=\"302\" data-end=\"587\"\u003eThe \u003cstrong data-start=\"306\" data-end=\"339\"\u003eSierra 18-3390 Water Pump Kit\u003c\/strong\u003e is a complete cooling system rebuild kit designed for high-horsepower Johnson and Evinrude outboards with large gearcases. This kit restores proper water flow through the engine, preventing overheating and ensuring reliable performance under load.\u003c\/p\u003e\n\u003cp data-start=\"589\" data-end=\"810\"\u003eThis is a \u003cstrong data-start=\"599\" data-end=\"624\"\u003e“without housing” kit\u003c\/strong\u003e, meaning it includes all internal wear components but reuses the existing pump housing. Ideal for routine service or restoring engines with reduced water pressure or overheating issues.\u003c\/p\u003e\n\u003cp data-start=\"812\" data-end=\"971\"\u003eManufactured to meet or exceed OEM specifications, Sierra kits provide dependable fit, durability, and long service life. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"973\" data-end=\"976\"\u003e\n\u003ch2 data-start=\"978\" data-end=\"997\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"981\" data-end=\"997\"\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"998\" data-end=\"1378\"\u003e\n\u003cli data-start=\"998\" data-end=\"1053\"\u003eComplete internal water pump rebuild kit (no housing)\u003c\/li\u003e\n\u003cli data-start=\"1054\" data-end=\"1160\"\u003eIncludes impeller, wear plate, cup, seals, gaskets, and hardware \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1161\" data-end=\"1271\"\u003eDesigned for large gearcase outboards (high horsepower applications) \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1272\" data-end=\"1321\"\u003eRestores proper cooling water pressure and flow\u003c\/li\u003e\n\u003cli data-start=\"1322\" data-end=\"1378\"\u003eOEM-quality construction with Sierra lifetime warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1380\" data-end=\"1383\"\u003e\n\u003ch2 data-start=\"1385\" data-end=\"1412\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1388\" data-end=\"1412\"\u003eEngine Compatibility\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 data-start=\"1414\" data-end=\"1456\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1418\" data-end=\"1456\"\u003eJohnson \/ Evinrude \/ OMC Outboards\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1457\" data-end=\"1498\"\u003e\u003cstrong data-start=\"1457\" data-end=\"1498\"\u003eLarge Gearcase Models (1979 \u0026amp; Newer):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1499\" data-end=\"1613\"\u003e\n\u003cli data-start=\"1499\" data-end=\"1506\"\u003e85 HP\u003c\/li\u003e\n\u003cli data-start=\"1507\" data-end=\"1514\"\u003e90 HP\u003c\/li\u003e\n\u003cli data-start=\"1515\" data-end=\"1523\"\u003e100 HP\u003c\/li\u003e\n\u003cli data-start=\"1524\" data-end=\"1532\"\u003e115 HP\u003c\/li\u003e\n\u003cli data-start=\"1533\" data-end=\"1541\"\u003e135 HP\u003c\/li\u003e\n\u003cli data-start=\"1542\" data-end=\"1550\"\u003e140 HP\u003c\/li\u003e\n\u003cli data-start=\"1551\" data-end=\"1559\"\u003e150 HP\u003c\/li\u003e\n\u003cli data-start=\"1560\" data-end=\"1568\"\u003e175 HP\u003c\/li\u003e\n\u003cli data-start=\"1569\" data-end=\"1577\"\u003e200 HP\u003c\/li\u003e\n\u003cli data-start=\"1578\" data-end=\"1586\"\u003e225 HP\u003c\/li\u003e\n\u003cli data-start=\"1587\" data-end=\"1595\"\u003e235 HP\u003c\/li\u003e\n\u003cli data-start=\"1596\" data-end=\"1604\"\u003e250 HP\u003c\/li\u003e\n\u003cli data-start=\"1605\" data-end=\"1613\"\u003e300 HP\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1615\" data-end=\"1686\"\u003e➡️ Fits \u003cstrong data-start=\"1623\" data-end=\"1663\"\u003eV4 \u0026amp; V6 crossflow and looper engines\u003c\/strong\u003e using large gearcases.\u003c\/p\u003e\n\u003cp data-start=\"1688\" data-end=\"1869\"\u003eThese engines share the same pump design and internal components, making this kit widely cross-compatible across the OMC high-horsepower range. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"1871\" data-end=\"1874\"\u003e\n\u003ch2 data-start=\"1876\" data-end=\"1913\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1879\" data-end=\"1911\"\u003eSerial Number Fitment Notice\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1914\" data-end=\"1965\"\u003eThis kit fits \u003cstrong data-start=\"1928\" data-end=\"1964\"\u003elarge gearcase applications only\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1967\" data-end=\"1985\"\u003e⚠️ Always confirm:\u003c\/p\u003e\n\u003cul data-start=\"1986\" data-end=\"2066\"\u003e\n\u003cli data-start=\"1986\" data-end=\"2018\"\u003eGearcase size (large vs small)\u003c\/li\u003e\n\u003cli data-start=\"2019\" data-end=\"2042\"\u003eEngine model and year\u003c\/li\u003e\n\u003cli data-start=\"2043\" data-end=\"2066\"\u003eOEM part number match\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2068\" data-end=\"2163\"\u003eSome smaller HP models use different kits — serial number verification is strongly recommended.\u003c\/p\u003e\n\u003chr data-start=\"2165\" data-end=\"2168\"\u003e\n\u003ch2 data-start=\"2170\" data-end=\"2209\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2173\" data-end=\"2209\"\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2210\" data-end=\"2251\"\u003eReplace the water pump kit if you notice:\u003c\/p\u003e\n\u003cul data-start=\"2252\" data-end=\"2411\"\u003e\n\u003cli data-start=\"2252\" data-end=\"2290\"\u003eWeak or inconsistent telltale stream\u003c\/li\u003e\n\u003cli data-start=\"2291\" data-end=\"2313\"\u003eOverheating at speed\u003c\/li\u003e\n\u003cli data-start=\"2314\" data-end=\"2339\"\u003eReduced cooling at idle\u003c\/li\u003e\n\u003cli data-start=\"2340\" data-end=\"2370\"\u003eImpeller damage or hardening\u003c\/li\u003e\n\u003cli data-start=\"2371\" data-end=\"2411\"\u003eEngine sitting unused for long periods\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2413\" data-end=\"2474\"\u003eRecommended service interval: \u003cstrong data-start=\"2443\" data-end=\"2474\"\u003eevery 100 hours or annually\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr data-start=\"2476\" data-end=\"2479\"\u003e\n\u003ch2 data-start=\"2481\" data-end=\"2506\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2484\" data-end=\"2506\"\u003eInstallation Notes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"2507\" data-end=\"2773\"\u003e\n\u003cli data-start=\"2507\" data-end=\"2550\"\u003eThis kit \u003cstrong data-start=\"2518\" data-end=\"2550\"\u003edoes NOT include the housing\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2551\" data-end=\"2602\"\u003eInspect housing and replace if scored or corroded\u003c\/li\u003e\n\u003cli data-start=\"2603\" data-end=\"2653\"\u003eInstall impeller with correct rotation direction\u003c\/li\u003e\n\u003cli data-start=\"2654\" data-end=\"2689\"\u003eUse marine grease during assembly\u003c\/li\u003e\n\u003cli data-start=\"2690\" data-end=\"2739\"\u003eReplace grommets and seals to prevent air leaks\u003c\/li\u003e\n\u003cli data-start=\"2740\" data-end=\"2773\"\u003eTorque fasteners evenly to spec\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2775\" data-end=\"2778\"\u003e\n\u003ch2 data-start=\"2780\" data-end=\"2822\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2783\" data-end=\"2822\"\u003eAlternate \/ Superseded Part Numbers\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 data-start=\"2824\" data-end=\"2852\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2828\" data-end=\"2852\"\u003eOEM Cross References\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2853\" data-end=\"2992\"\u003e\n\u003cli data-start=\"2853\" data-end=\"2992\"\u003eJohnson \/ Evinrude \/ OMC:\n\u003cul data-start=\"2885\" data-end=\"2992\"\u003e\n\u003cli data-start=\"2885\" data-end=\"2900\"\u003e\u003cstrong data-start=\"2887\" data-end=\"2898\"\u003e0395060\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"2903\" data-end=\"2918\"\u003e\u003cstrong data-start=\"2905\" data-end=\"2916\"\u003e0434421\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"2921\" data-end=\"2936\"\u003e\u003cstrong data-start=\"2923\" data-end=\"2934\"\u003e0435447\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-start=\"2939\" data-end=\"2992\"\u003e\n\u003cstrong data-start=\"2941\" data-end=\"2952\"\u003e5001594\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"2994\" data-end=\"3030\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2998\" data-end=\"3030\"\u003eAftermarket Cross References\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"3031\" data-end=\"3112\"\u003e\n\u003cli data-start=\"3031\" data-end=\"3049\"\u003eGLM: \u003cstrong data-start=\"3038\" data-end=\"3047\"\u003e12104\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3050\" data-end=\"3112\"\u003eMallory: \u003cstrong data-start=\"3061\" data-end=\"3072\"\u003e9-48210\u003c\/strong\u003e \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"3114\" data-end=\"3117\"\u003e\n\u003ch2 data-start=\"3119\" data-end=\"3136\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"3122\" data-end=\"3134\"\u003eShipping\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"3137\" data-end=\"3202\"\u003eShipping: Ships same or next day for fast Canada wide shipping. ⚓\u003c\/p\u003e","brand":"WEST","offers":[{"title":"Default Title","offer_id":43564077842468,"sku":"18-3390","price":77.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/734dae83-7e92-4a24-94c6-13f6e259ab5e.png?v=1774144466","url":"https:\/\/marisolmarine.com\/products\/sierra-marine-water-pump-kit-18-3390","provider":"Marisol Marine Company","version":"1.0","type":"link"}