{"product_id":"438592-water-pump-repair-kit-for-johnson-evinrude-40hp-50hp-jlm-marine-1","title":"438592 Water Pump Repair Kit for Johnson Evinrude 40HP 50HP | JLM Marine","description":"\u003ch2\u003e438592 Water Pump Repair Kit for Johnson Evinrude 40HP 50HP | JLM Marine\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive water pump repair kit is specifically designed for Johnson and Evinrude outboard engines rated at 40HP and 50HP manufactured between 1995 and 2005. Engineered to restore optimal cooling system performance, this kit ensures your engine operates at safe temperatures and maintains peak efficiency on the water.\u003c\/p\u003e\n\n\u003cp\u003eThis kit directly replaces OEM part number \u003cstrong\u003e438592\u003c\/strong\u003e, providing a reliable aftermarket solution for routine maintenance or emergency repairs. It includes all essential components needed for a complete water pump service, along with critical maintenance items to keep your outboard running smoothly.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eComplete repair kit with water pump components, thermostat, fuel filter, and gear oil pump\u003c\/li\u003e\n\u003cli\u003eFits both 40HP and 50HP Johnson\/Evinrude models from 1995 to 2005\u003c\/li\u003e\n\u003cli\u003eIncludes drain screw gaskets and thermostat gasket for comprehensive service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePart Number Cross-Reference\u003c\/h2\u003e\n\n\u003cp\u003eUse this table to confirm the OEM part number for your Johnson\/Evinrude outboard:\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003ePart Number\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n\u003ctd\u003e438592\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCompatible Engine Models\u003c\/h2\u003e\n\n\u003cp\u003eConfirm your engine model\/year in the table below. For Johnson\/Evinrude owners, here's a guide to help you identify your engine's serial\/model: \u003ca href=\"https:\/\/jlmmarine.com\/blogs\/serial-number-guide\/johnson-serial-number-guide\" rel=\"nofollow noopener\" target=\"_blank\"\u003eJohnson\/Evinrude Serial Number Guide\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003cth\u003eRated HP\u003c\/th\u003e\n\u003cth\u003eYears\u003c\/th\u003e\n\u003cth\u003eOEM Part No.\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n\u003ctd\u003e40HP\u003c\/td\u003e\n\u003ctd\u003e1995-2005\u003c\/td\u003e\n\u003ctd\u003e438592\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJohnson\/Evinrude\u003c\/td\u003e\n\u003ctd\u003e50HP\u003c\/td\u003e\n\u003ctd\u003e1995-2005\u003c\/td\u003e\n\u003ctd\u003e438592\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse:collapse; width:100%;\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003e438592\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHorsepower Range\u003c\/td\u003e\n\u003ctd\u003e40HP, 50HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplicable Years\u003c\/td\u003e\n\u003ctd\u003e1995-2005\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand Compatibility\u003c\/td\u003e\n\u003ctd\u003eJohnson, Evinrude\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\n\u003cp\u003eThis comprehensive kit includes the following components:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color:red;\"\u003e\u003cstrong\u003e438592 Water Pump Repair Kit × 1\u003c\/strong\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e436195 Thermostat × 1\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e329830 Thermostat Gasket × 1\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0398319 Fuel Filter × 1\u003c\/strong\u003e \u003ca href=\"https:\/\/jlmmarine.com\/products\/3-8-inch-inline-fuel-filter-for-johnson-evinrude-18-7831\" target=\"_blank\"\u003eView Part →\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e311598 Drain Screw Gasket × 2\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e24OP149 Gear Oil Pump × 1\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eInstallation Guide\u003c\/h2\u003e\n\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreparation:\u003c\/strong\u003e Disconnect the fuel line and remove the lower unit from the outboard engine following your service manual. Drain any remaining water from the cooling system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove Old Components:\u003c\/strong\u003e Detach the water pump housing and carefully remove the old impeller, gaskets, and seals. Inspect the housing for scoring or damage that may affect new parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean Surfaces:\u003c\/strong\u003e Thoroughly clean all mating surfaces on the pump housing and driveshaft housing to ensure proper sealing. Remove all old gasket material and debris.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall New Impeller:\u003c\/strong\u003e Lubricate the new impeller with glycerin or soapy water (never petroleum-based products). Install the impeller onto the driveshaft with blades oriented in the correct rotation direction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Gaskets and Seals:\u003c\/strong\u003e Position new gaskets and seals from the kit onto the housing. Ensure all components are properly aligned and seated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReassemble Water Pump:\u003c\/strong\u003e Carefully install the water pump housing over the impeller, ensuring blades fold correctly during installation. Torque all fasteners to manufacturer specifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplace Thermostat:\u003c\/strong\u003e Remove the old thermostat from the cylinder head and clean the mounting surface. Install the new thermostat (436195) with the provided gasket (329830) in the correct orientation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall Fuel Filter:\u003c\/strong\u003e Replace the old fuel filter with the new 0398319 fuel filter included in the kit. Ensure fuel line connections are tight and leak-free.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplace Drain Screw Gaskets:\u003c\/strong\u003e Install the two new 311598 drain screw gaskets on the lower unit drain and fill plugs to prevent gear oil leaks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRefill Gear Oil:\u003c\/strong\u003e Use the included 24OP149 gear oil pump to refill the lower unit with appropriate marine gear oil until it flows from the upper vent hole.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReinstall Lower Unit:\u003c\/strong\u003e Align the lower unit with the driveshaft and water tube, then secure all mounting bolts. Reconnect the fuel line and check all connections.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest Operation:\u003c\/strong\u003e Run the engine in a test tank or on the water, checking for proper cooling water discharge from the telltale. Monitor engine temperature and inspect for any leaks.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch2\u003eTroubleshooting \u0026amp; FAQ\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm this kit fits my specific Johnson or Evinrude engine?\u003c\/strong\u003e\u003cbr\u003e\nA: Verify that your engine is a 40HP or 50HP model manufactured between 1995 and 2005. Cross-reference the OEM part number 438592 with your service manual or existing water pump kit. If your model year and horsepower match the compatibility table above, this kit will fit your engine.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace the water pump impeller and components?\u003c\/strong\u003e\u003cbr\u003e\nA: Most manufacturers recommend replacing the water pump impeller every 2-3 years or 200-300 hours of operation, whichever comes first. If you notice overheating, reduced water flow from the telltale, or operate in sandy\/silty water, inspect and replace components more frequently.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What are the signs that my water pump is failing?\u003c\/strong\u003e\u003cbr\u003e\nA: Common symptoms include weak or no water discharge from the telltale port, engine overheating, steam from the engine, loss of power, or an overheating alarm. If you experience any of these issues, inspect and replace the water pump components immediately to prevent engine damage.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Can I install this kit myself or do I need a professional mechanic?\u003c\/strong\u003e\u003cbr\u003e\nA: If you have mechanical experience and the proper tools, you can install this kit following your engine's service manual. However, proper alignment of the water tube and correct impeller orientation are critical. If you're uncertain, professional installation is recommended to ensure reliable cooling system performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What's the difference between this aftermarket kit and the original OEM part?\u003c\/strong\u003e\u003cbr\u003e\nA: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: How fast do you ship and how much does it cost?\u003c\/strong\u003e\u003cbr\u003e\nA: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: What is your warranty and return policy?\u003c\/strong\u003e\u003cbr\u003e\nA: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused \u0026amp; in original condition); please see our policy page or reach out for instructions.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003eVerify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.\u003c\/li\u003e\n\u003cli\u003eThis product is an aftermarket replacement part and is not an OEM component.\u003c\/li\u003e\n\u003cli\u003eProfessional installation is recommended to ensure safety and optimal performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose JLM MARINE?\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Assured:\u003c\/strong\u003e As a trusted manufacturer for over 20 years, we supply top marine brands globally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Global Shipping:\u003c\/strong\u003e Free delivery worldwide in 5–15 days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect from Manufacturer:\u003c\/strong\u003e Competitive pricing without compromising quality.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"JLM Marine","offers":[{"title":"Default Title","offer_id":52418217738553,"sku":"25KO234","price":78.88,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0885\/0433\/6697\/files\/kit-25KO234_d67a88aa-fce1-4081-8c98-4dc41b088d14.png?v=1776686763","url":"https:\/\/jlmmarine.com\/ru\/products\/438592-water-pump-repair-kit-for-johnson-evinrude-40hp-50hp-jlm-marine-1","provider":"JLM Marine Boat Parts Limited","version":"1.0","type":"link"}