{"product_id":"sierra-18-3050-johnson-evinrude-impeller","title":"Sierra 3050 Johnson\/Evinrude Impeller","description":"\u003cp\u003eThe \u003cstrong\u003eSierra 3050 (18-3050) Impeller\u003c\/strong\u003e is a direct-fit replacement water pump impeller for Johnson and Evinrude outboard engines. Built to OEM specifications, this neoprene impeller restores proper cooling water circulation through the lower unit water pump, preventing powerhead overheating on smaller displacement J\/E outboards.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003e\u003cspan\u003eKey Features\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003eSierra aftermarket replacement water pump impeller\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSierra part number 18-3050\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eReplaces Johnson\/Evinrude and OMC 386084 \/ 0386084\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSix flexible impeller blades\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNeoprene-style rubber construction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCorrosion-resistant metal hub\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInstalls in the outboard lower-unit water pump\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eApproximate outside diameter: 38.4 mm \/ 1.51 inches\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eApproximate shaft opening: 12.75 mm \/ 0.50 inch\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eImpeller only; housing, plate, key and gaskets are not identified as included\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003e\u003cspan\u003eEngine Compatibility\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe Sierra 18-3050 is commonly associated with compatible Johnson and Evinrude outboards using OEM impeller 386084, including:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-spread=\"false\"\u003e\n\u003cli\u003e\u003cspan\u003e8 HP four-stroke models, approximately 1995–2004\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e9.9 HP two-stroke models, approximately 1974–2006\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e15 HP two-stroke models, approximately 1974–2006\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e9.9 HP four-stroke models, approximately 1995–2001\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e15 HP four-stroke models, approximately 1995–2001\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eParts Desk Insight — Best Use\u003c\/h2\u003e\n\u003cp\u003eThis impeller is the correct service part for routine water pump maintenance on Johnson\/Evinrude outboards in the smaller horsepower range. Best practice is to replace the impeller every 2–3 seasons or 200 hours of operation — whichever comes first — regardless of visible wear. Impeller vanes harden and lose flexibility over time without showing obvious external damage, which reduces cooling flow and risks engine overheating. Always replace during lower unit service or anytime the gearcase is opened.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e For a complete water pump service, pair this impeller with a full water pump repair kit that includes the housing, wear plate, gaskets, and seals. Confirm fitment against your engine model and year before ordering.\u003c\/p\u003e\n\u003ch2\u003eCompatible Water Pump Kits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sierra-marine-water-pump-kit-18-3380-johnson-evinrude-40-75hp-cooling-system-rebuild\"\u003eSierra Marine Water Pump Kit 18-3380 – Johnson\/Evinrude 40–75HP\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sierra-marine-water-pump-kit-18-3390-johnson-evinrude-85-300hp-v4-v6-cooling-system-rebuild\"\u003eSierra Marine Water Pump Kit 18-3390 – Johnson\/Evinrude 85–300HP V4\/V6\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eRelated Impellers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sierra-18-3051-johnson-evinrude-impeller\"\u003eSierra 3051 (18-3051) Johnson\/Evinrude Impeller\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sierra-3058-johnson-evinrude-impeller\"\u003eSierra 3058 Johnson\/Evinrude Impeller\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sierra-3059-johnson-evinrude-impeller\"\u003eSierra 3059 Johnson\/Evinrude Impeller\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sierra-31041-johnson-evinrude-impeller\"\u003eSierra 31041 Johnson\/Evinrude Impeller\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eRefer to the Sierra Marine catalog or your engine service manual to confirm fitment for your specific engine model and year.\u003c\/em\u003e\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51156142784548,"sku":"47-3050","price":37.69,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/47-3050.jpg?v=1784926918","url":"https:\/\/marisolmarine.com\/products\/sierra-18-3050-johnson-evinrude-impeller","provider":"Marisol Marine Company","version":"1.0","type":"link"}