{"product_id":"tutor-auto-water-pump-kit-for-johnson-evinrude-20-35-hp-direct-fit-neoprene-impeller-complete-hardware","title":"Tutor Auto Water Pump Kit for Johnson Evinrude 20–35 HP — Direct-Fit Neoprene Impeller \u0026 Complete Hardware","description":"\u003cp\u003e\u003cstrong\u003eComplete water pump impeller kit that replaces Johnson\/Evinrude part numbers (including 393630) for 20–35 HP outboards to restore engine cooling and water circulation.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eKeeping an outboard's cooling system functioning is essential for reliable performance on the water. This Tutor Auto 393630 water pump kit supplies the neoprene impeller and all mating components needed to service Johnson and Evinrude 20–35 HP models from the 1980s through early 2000s. The kit is a direct-fit aftermarket replacement designed to match factory dimensions so you can swap parts quickly without modification.\u003c\/p\u003e\n\n\u003ch3\u003eWhich engines and years will this kit work with?\u003c\/h3\u003e\n\u003cp\u003eThe kit is formulated to replace multiple OEM part numbers across Johnson and Evinrude models. It's intended for 20 HP and 25 HP engines 1985 and later, many 25 HP commercial models from 1998–2001, 30 HP units from several early-1980s model years, and select 35 HP versions. Always cross-check your engine's part number against the compatibility list before purchasing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eReplaces Johnson\/Evinrude part numbers: 393630, 393509, 391636, 0393630\u003c\/li\u003e\n  \u003cli\u003eSierra cross-reference: 18-3382\u003c\/li\u003e\n  \u003cli\u003eCoverage: Johnson\/Evinrude 20–35 HP across specified years and configurations\u003c\/li\u003e\n  \u003cli\u003eVerify model\/year and serial number for exact fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat components are included and how do they improve reliability?\u003c\/h3\u003e\n\u003cp\u003eThis Tutor Auto kit contains the neoprene impeller plus the pump cup, housing, wear plate, gaskets, seals, mounting bolts, an installation wrench and O-ring — everything needed for a full water pump service. Using matching components reduces the risk of leaks and misalignment that can shorten impeller life or cause poor cooling flow.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNeoprene impeller for flexible vane action and heat resistance\u003c\/li\u003e\n  \u003cli\u003ePump cup, housing and wear plate to restore correct clearances\u003c\/li\u003e\n  \u003cli\u003eInstallation bolts, gasket, O-ring and seal for leak-free assembly\u003c\/li\u003e\n  \u003cli\u003eProvided wrench simplifies on-boat replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and does this match OEM fitment?\u003c\/h3\u003e\n\u003cp\u003eThe kit is manufactured to OEM dimensions for a direct replacement experience — no custom machining or special adapters are required. If you are comfortable with basic outboard maintenance, the swap can typically be done with hand tools in a few hours; the included hardware and wrench speed the process and help ensure proper torque and alignment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDirect-fit design mirrors factory parts for easy swap-in\u003c\/li\u003e\n  \u003cli\u003eIncludes all necessary hardware and a wrench for installation\u003c\/li\u003e\n  \u003cli\u003eRecommended to inspect gearbox and water passages when servicing\u003c\/li\u003e\n  \u003cli\u003eReplace annually or every ~100 hours to prevent cooling failures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat materials and quality standards are used?\u003c\/h3\u003e\n\u003cp\u003eThe impeller is molded from a durable neoprene rubber compound chosen for flexibility and resistance to heat and cavitation. Housings and wear components are made from durable metals or composites to maintain proper clearances and extend service intervals. Although this is an aftermarket kit and not an OMC-branded product, it is built to meet or exceed factory fit and function standards.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNeoprene impeller for longevity and vane resilience\u003c\/li\u003e\n  \u003cli\u003ePrecision housings and wear plate to preserve flow geometry\u003c\/li\u003e\n  \u003cli\u003eSeals and gaskets engineered to prevent leaks and intrusion\u003c\/li\u003e\n  \u003cli\u003eQuality control ensures dimensional accuracy and reliable performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this kit is for: Boaters, marine mechanics and DIYers who own Johnson or Evinrude 20–35 HP outboards and need a full water pump service kit to restore cooling performance. It's suitable for routine maintenance or preventative replacement before a season, and for anyone who prefers a single-purchase solution that includes impeller, housing parts and installation hardware. Always confirm compatibility with your engine serial\/model before ordering.\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: How often should I replace the water pump impeller?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Inspect yearly or every 100 engine hours; replace sooner if you see wear, cracking, or reduced cooling flow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will this kit fit my Johnson\/Evinrude 25 HP from 1999?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Many 1998–2001 25 HP commercial and consumer models are covered; confirm your engine’s part number or serial to be sure.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Tutor Auto","offers":[{"title":"Default Title","offer_id":67593440723129,"sku":"B08L74RS86","price":60.86,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/tutor-auto-393630-front-packaging.jpg?v=1790575565","url":"https:\/\/redleafauto.ca\/products\/tutor-auto-water-pump-kit-for-johnson-evinrude-20-35-hp-direct-fit-neoprene-impeller-complete-hardware","provider":"Redleaf Auto","version":"1.0","type":"link"}