{"product_id":"ghmarine-impeller-repair-kit-for-johnson-evinrude-4-8-hp-outboards-396644-oem-equivalent-with-gaskets-seals","title":"GHmarine Impeller Repair Kit for Johnson \u0026 Evinrude 4–8 HP Outboards — 396644 OEM-Equivalent with Gaskets \u0026 Seals","description":"\u003cp\u003e\u003cstrong\u003eGHmarine 396644 is a complete impeller repair kit engineered to restore cooling flow on Johnson and Evinrude 4–8 HP outboard engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhether you’re doing seasonal maintenance or fixing a failing water pump, this kit contains the parts to replace the impeller and its associated seals and gaskets for a reliable cooling system. Built to match OEM fit and function, the set replaces Johnson\/Evinrude part numbers 396644, 389844, 765603 and Sierra 18-4529, and fits a broad range of small outboards from 4 to 8 horsepower across multiple production years.\u003c\/p\u003e\n\n\u003ch3\u003eWhich engines will this impeller kit fit?\u003c\/h3\u003e\n\n\u003cp\u003eThis GHmarine kit is designed for compatibility with many Johnson and Evinrude small outboards. It covers multiple model years and horsepower ratings so you can match it to older or newer motors without guessing.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e4 HP: models from 1986–1992\u003c\/li\u003e\n  \u003cli\u003e4.5 HP: models from 1980–1984\u003c\/li\u003e\n  \u003cli\u003e5 HP: models from 1980–1983 and 1996–2001\u003c\/li\u003e\n  \u003cli\u003e6 HP: models from 1984–2001 and 2003–2005\u003c\/li\u003e\n  \u003cli\u003e8 HP: models from 1980–2001 and 2003–2005\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat parts are included in the kit and why they matter?\u003c\/h3\u003e\n\n\u003cp\u003eThis repair kit bundles the impeller with the gaskets, O-rings and seals needed to reseal the water pump housing and restore proper circulation. Replacing the entire assembly prevents leaks and uneven wear that can happen when only the impeller is changed.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eRubber impeller — moves cooling water across the engine’s lower unit\u003c\/li\u003e\n  \u003cli\u003eGaskets and O-rings — ensure a watertight seal for consistent pressure\u003c\/li\u003e\n  \u003cli\u003eSeals and hardware — replace worn components that cause leaks or vibration\u003c\/li\u003e\n  \u003cli\u003eOEM-equivalent fitments — matches Johnson\/Evinrude part numbers for straightforward installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow will installing this kit affect my engine’s performance?\u003c\/h3\u003e\n\n\u003cp\u003eReplacing a worn impeller and seals restores proper cooling flow, reducing the risk of overheating and maintaining the engine’s designed operating temperature. While it won’t change engine power, it protects internal components and supports reliable operation on the water.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eImproves coolant circulation through the exhaust and water jackets\u003c\/li\u003e\n  \u003cli\u003eReduces chances of heat-related wear to the lower unit and cylinder head\u003c\/li\u003e\n  \u003cli\u003ePrevents cavitation and irregular water flow from cracked or missing vanes\u003c\/li\u003e\n  \u003cli\u003eStops leaks that can lead to reduced pump efficiency\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this kit easy to install and what tools will I need?\u003c\/h3\u003e\n\n\u003cp\u003eFor a mechanically inclined boater, installation is straightforward with basic hand tools and a few specialty items depending on your engine. The kit’s components are sized for direct replacement, which simplifies the process compared with sourcing parts individually.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eBasic set: screwdrivers, socket set, pliers\u003c\/li\u003e\n  \u003cli\u003eHelpful extras: impeller puller (if needed), seal lubricant, torque wrench\u003c\/li\u003e\n  \u003cli\u003eTime estimate: typically 45–90 minutes for routine replacement\u003c\/li\u003e\n  \u003cli\u003eManual reference: consult your engine service manual for torque specs and alignment\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: GHmarine’s 396644 impeller kit is intended for owners, mechanics, and marina technicians maintaining Johnson and Evinrude 4–8 HP outboards who want a single, OEM-equivalent package to complete water pump service. It’s well suited to seasonal tune-ups, preventative maintenance schedules, and field repairs where restoring proper cooling quickly is essential. If you operate older small outboards or keep spare parts on board, this kit gives you the gaskets and seals needed to finish the job without multiple parts orders.\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: Does this kit replace Johnson part 396644?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — GHmarine 396644 is a direct replacement for Johnson\/Evinrude part 396644 and equivalent numbers listed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I replace the impeller?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Replace the impeller yearly or every season of heavy use, or immediately if you notice reduced water flow or damaged vanes.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"GHmarine","offers":[{"title":"Default Title","offer_id":48086744006814,"sku":"B0D7PWHQV4","price":57.32,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/ghmarine-396644-front-packaging.jpg?v=1785903438","url":"https:\/\/northtrailauto.ca\/products\/ghmarine-impeller-repair-kit-for-johnson-evinrude-4-8-hp-outboards-396644-oem-equivalent-with-gaskets-seals","provider":"North Trail Auto","version":"1.0","type":"link"}