{"product_id":"ghmarine-water-pump-impeller-repair-kit-for-johnson-evinrude-40-50-hp-replaces-438592-with-housing-seals","title":"GHmarine Water Pump Impeller Repair Kit for Johnson\/Evinrude 40–50 HP — Replaces 438592 with Housing \u0026 Seals","description":"\u003cp\u003e\u003cstrong\u003eGHmarine's water pump impeller repair kit is a complete OEM-spec replacement set designed to restore cooling to Evinrude\/Johnson 40–50 HP 2-cylinder outboards by replacing part 438592 and compatible OEM numbers.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhether you maintain an older 40–50 HP Johnson or Evinrude two-stroke or are preparing your boat for the season, this repair kit supplies the parts needed to rebuild the water pump housing and impeller assembly. It replaces multiple factory part numbers (433548, 433549, 438592, 777805 and equivalents) and fits many models from roughly 1986 through 2005. The kit bundles the impeller, housing, seals and hardware so you can complete the job in one service session.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this kit restore cooling to a 40–50 HP outboard?\u003c\/h3\u003e\n\u003cp\u003eThe kit contains the core wear and sealing components that move raw water through the engine’s cooling passages. Installing the new impeller and housing re-establishes proper water flow and pressure when the engine is running.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIncludes molded rubber impeller and impeller key to ensure correct fit and rotation.\u003c\/li\u003e\n  \u003cli\u003eNew water pump housing and cup replace corroded or cracked parts that leak or cavitate.\u003c\/li\u003e\n  \u003cli\u003eSeals, o-rings and gasket restore a watertight assembly to prevent bypass and loss of pressure.\u003c\/li\u003e\n  \u003cli\u003eStainless steel bolts resist corrosion for longer service life.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich engine models and OEM numbers does this GHmarine kit match?\u003c\/h3\u003e\n\u003cp\u003eThis rebuild kit is made for two-cylinder, two-stroke Johnson and Evinrude outboards in the 40–50 HP range, commonly found on models produced from about 1986 to 2005. It is engineered to replace several factory part numbers to simplify sourcing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect replacement for OEMs: 433548, 433549, 438592, 777805 (and related formats).\u003c\/li\u003e\n  \u003cli\u003eCompatible with aftermarket cross-references such as Sierra 18-3454 and 18-3394, Mallory 9-48209.\u003c\/li\u003e\n  \u003cli\u003eDesigned for most 2-cylinder 40, 45, 48 and 50 HP Johnson\/Evinrude engines of the era.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat components are included and what should I inspect while rebuilding?\u003c\/h3\u003e\n\u003cp\u003eThe kit is comprehensive so you rarely need extra parts for a standard impeller rebuild. While you have the pump apart, check neighboring components for wear or corrosion to avoid repeat service.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eKit contents: 1 impeller, 1 impeller key, 1 wear plate, 1 gasket, 1 oil seal, 1 shaft seal, 1 grommet, pump housing and cup, 4 stainless bolts and 2 o-rings.\u003c\/li\u003e\n  \u003cli\u003eInspect the driveshaft and keyway for scoring and the thermostat housing for blockage or corrosion.\u003c\/li\u003e\n  \u003cli\u003eVerify water pickup screens and hoses are clear to ensure full flow after assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow often should I replace the impeller and when is replacement urgent?\u003c\/h3\u003e\n\u003cp\u003eMarine impellers are wear items that should be checked every season and generally replaced every two to three seasons depending on use and water quality. Replace immediately if you notice overheating, reduced temperature regulation or visible damage to the old impeller.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCheck the impeller for torn blades, hardening or missing segments each spring.\u003c\/li\u003e\n  \u003cli\u003eReplace sooner if running in sandy, silty, or heavily mineralized water.\u003c\/li\u003e\n  \u003cli\u003eA seized, shredded, or collapsed impeller demands immediate replacement to avoid engine damage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The GHmarine 438592 water pump impeller repair kit is aimed at boat owners, DIY marine mechanics and professional service shops working on 2-cylinder Johnson and Evinrude 40–50 HP outboards from the late 1980s through the early 2000s. If you need a full rebuild pack that matches common OEM part numbers and includes the housing, seals and hardware, this kit offers a practical, service-ready solution to bring an older outboard’s cooling system back to reliable operation.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this kit fit my 1998 Johnson 50 HP two-stroke?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes—this GHmarine kit is compatible with most 2-cylinder Johnson\/Evinrude 40–50 HP two-stroke models from about 1986–2005. Check your old part numbers to confirm fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does the kit include all seals and bolts needed for installation?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The package includes the impeller, housing, wear plate, gasket, seals, grommet, four stainless bolts and two o-rings for a complete rebuild.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GHmarine","offers":[{"title":"Default Title","offer_id":48083181535390,"sku":"B08865JLG1","price":60.48,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/ghmarine-front-packaging-water-pump-kit.jpg?v=1785827990","url":"https:\/\/northtrailauto.ca\/products\/ghmarine-water-pump-impeller-repair-kit-for-johnson-evinrude-40-50-hp-replaces-438592-with-housing-seals","provider":"North Trail Auto","version":"1.0","type":"link"}