{"product_id":"northboat-water-pump-impeller-kit-for-johnson-evinrude-8-15-hp-outboards-complete-seal-hardware-set","title":"NorthBoat Water Pump Impeller Kit for Johnson \u0026 Evinrude 8–15 HP Outboards — Complete Seal \u0026 Hardware Set","description":"\u003cp\u003e\u003cstrong\u003eNorthBoat 394711 Water Pump Impeller Kit is a complete replacement set designed to restore cooling and water flow for Johnson and Evinrude 8–15 HP outboard motors.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf your small outboard is showing signs of overheating, weak water stream, or rough running, the problem is often a degraded impeller inside the gearcase. This NorthBoat aftermarket kit supplies the parts you need to replace the impeller and related seals on Johnson and Evinrude models (various 8–15 HP 2- and 4-stroke engines spanning the 1970s through the early 2000s). The kit mirrors OEM compatibility numbers and includes fasteners and grommets so you can complete the job without hunting down extra components.\u003c\/p\u003e\n\n\u003ch3\u003eHow will this impeller kit improve my boat's cooling and performance?\u003c\/h3\u003e\n\u003cp\u003eReplacing a worn impeller restores the internal water pump’s ability to draw and circulate cooling water from the lower unit. That prevents overheating, reduces cylinder temperature spikes, and stabilizes idle and midrange operation when the engine is under load.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNeoprene impeller delivers renewed water flow for proper cooling.\u003c\/li\u003e\n  \u003cli\u003eIncluded pump housing and cup ensure correct water channeling.\u003c\/li\u003e\n  \u003cli\u003eNew seals and wear plate stop leaks and prevent cavitation damage.\u003c\/li\u003e\n  \u003cli\u003eInstallation hardware and grommets let you reassemble without missing parts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich engine models and part numbers does this kit fit?\u003c\/h3\u003e\n\u003cp\u003eThis kit is built to replace many original equipment part numbers for Johnson and Evinrude small outboards, covering both 2- and 4-stroke variants produced across several model years. It parallels common aftermarket references so technicians and DIYers can match it to their motor’s service manual listings.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits Johnson\/Evinrude 8 HP 4T (1995–2004) and 8\/9.9 HP 211cc (1996–2004).\u003c\/li\u003e\n  \u003cli\u003eCompatible with 9.9\/15 HP 4T 305cc (1995–200?) and many 2- \u0026amp; 4-stroke 1974-up models.\u003c\/li\u003e\n  \u003cli\u003eCross-references OEM and aftermarket numbers: OMC 0394711, 18-3327, Mallory 9-48201, GLM 12050, Sierra 18-3327, and related listings.\u003c\/li\u003e\n  \u003cli\u003eCheck your motor’s service manual or part plate to confirm exact compatibility before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat components are included and why each matters?\u003c\/h3\u003e\n\u003cp\u003eThe kit includes the impeller plus every small part needed to reinstall the pump correctly—this prevents common failures caused by reusing old grommets or seals. Fresh hardware and a wear plate ensure reliable alignment and long service life after the replacement.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e1 neoprene impeller: the rotating element that pushes cooling water through the motor.\u003c\/li\u003e\n  \u003cli\u003e1 pump housing and 1 pump cup: restore sealed flow pathways inside the lower unit.\u003c\/li\u003e\n  \u003cli\u003e1 wear plate and 1 seal: protect mating surfaces and prevent internal leakage.\u003c\/li\u003e\n  \u003cli\u003e4 installation bolts, 3 grommets, 2 O-rings, 1 pin: complete reassembly parts included.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Boaters, marine technicians, and DIY enthusiasts who maintain Johnson or Evinrude 8–15 HP outboards and need a reliable, full replacement impeller kit. It’s aimed at anyone performing routine lower-unit maintenance or addressing symptoms like overheating, poor water stream from the telltale, or reduced engine performance due to a failing pump. If you service older outboards or keep a maintenance schedule (recommended change every 1–2 years or about every 100 hours), this NorthBoat kit supplies the parts needed for an efficient, professional repair.\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 impeller in my Johnson\/Evinrude outboard?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Replace the impeller every 1–2 years or about every 100 operating hours, or sooner if you notice reduced water flow or overheating.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this NorthBoat kit include everything needed for installation?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the kit contains the impeller, pump housing and cup, wear plate, seals, grommets, bolts, pin, and O-rings for complete reassembly.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"NorthBoat","offers":[{"title":"Default Title","offer_id":48085545123998,"sku":"B0C361RF41","price":40.85,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/northboat-394711-front-packaging.jpg?v=1785872505","url":"https:\/\/northtrailauto.ca\/products\/northboat-water-pump-impeller-kit-for-johnson-evinrude-8-15-hp-outboards-complete-seal-hardware-set","provider":"North Trail Auto","version":"1.0","type":"link"}