{"product_id":"sierra-18-3059-water-pump-impeller-for-evinrude-johnson-omc-outboards-replaces-omc-395864-397131-5001593-includes-impeller-key","title":"Sierra 18-3059 Water Pump Impeller - Replaces OMC 395864, 397131, 435821, 5001593 - Evinrude 140-175 HP Outboards","description":"\u003cp\u003eThe Sierra 18-3059 is a water pump impeller engineered as a direct replacement for the impeller used in Evinrude outboard water pump kits across a wide range of 140, 150, and 175 HP models. As the rotating component inside the outboard's water pump housing, the impeller draws raw water from the intake and circulates it through the powerhead cooling passages, keeping engine temperatures in check during operation. Its flexible vanes flex and release as the rotor turns, creating the pumping action that moves cooling water continuously while the engine runs.\u003c\/p\u003e\u003cp\u003eBuilt from plastic for consistent vane flexibility and wear resistance, this impeller is sized to fit directly into the water pump housings used across the listed Evinrude horsepower and year ranges, including 20 inch and 25 inch shaft length configurations. It is intended as a straightforward, drop-in replacement during routine water pump service or when replacing a worn or damaged impeller that is no longer sealing and pumping efficiently. Replacing the impeller is a standard maintenance item recommended on a routine service interval to avoid overheating caused by a worn impeller losing its vane tension.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3059\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Type:\u003c\/strong\u003e Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.4 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 7.13 inches L x 1.31 inches H x 6 inches W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Italy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999315151\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEvinrude 140 HP, 1979-Up\u003c\/li\u003e\n\u003cli\u003eEvinrude 140 HP, 25 inch shaft, 1993\u003c\/li\u003e\n\u003cli\u003eEvinrude 140 HP, 25 inch shaft, 1994-2000\u003c\/li\u003e\n\u003cli\u003eEvinrude 150 HP, 1979-Up\u003c\/li\u003e\n\u003cli\u003eEvinrude 150 HP, 20 inch shaft, 1993 \u0026amp; Up\u003c\/li\u003e\n\u003cli\u003eEvinrude 150 SL, 20 inch shaft, 1994-98\u003c\/li\u003e\n\u003cli\u003eEvinrude 150 EL, 20 inch shaft, 1996-98\u003c\/li\u003e\n\u003cli\u003eEvinrude 150 HP, 25 inch shaft, 1993 \u0026amp; Up\u003c\/li\u003e\n\u003cli\u003eEvinrude 150 DI, 1997 \u0026amp; Up\u003c\/li\u003e\n\u003cli\u003eEvinrude 150 HP, 2000 \u0026amp; Up\u003c\/li\u003e\n\u003cli\u003eEvinrude 175 SL, 20 inch shaft, 1994-98\u003c\/li\u003e\n\u003cli\u003eEvinrude 175 EL, 20 inch shaft, 1996-98\u003c\/li\u003e\n\u003cli\u003eEvinrude 175 HP, 25 inch shaft, 1993 \u0026amp; Up\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOMC 395864\u003c\/li\u003e\n\u003cli\u003e397131\u003c\/li\u003e\n\u003cli\u003e435821\u003c\/li\u003e\n\u003cli\u003e5001593\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Sierra 18-3059 impeller used for?\u003c\/strong\u003e It is the rotating water pump impeller that draws raw water into an Evinrude outboard and circulates it through the powerhead to keep the engine cool while running.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich outboards does the 18-3059 impeller fit?\u003c\/strong\u003e The 18-3059 fits Evinrude 140 HP models from 1979 and up (including 25 inch shaft units from 1993 and 1994-2000), 150 HP models from 1979 and up including SL, EL, DI, 20 inch, and 25 inch shaft variants through 2000 and up, and 175 SL, EL, and 25 inch shaft models.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3059 replace OMC part 395864?\u003c\/strong\u003e Yes, the Sierra 18-3059 is a direct cross-reference replacement for OMC 395864, along with OMC\/OEM numbers 397131, 435821, and 5001593.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the 18-3059 impeller made of?\u003c\/strong\u003e It is made of plastic, formed into flexible vanes that seal against the pump housing to move cooling water as the rotor turns.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3059 impeller weigh?\u003c\/strong\u003e The Sierra 18-3059 impeller weighs 0.4 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3059 a genuine Sierra part or a generic aftermarket copy?\u003c\/strong\u003e 18-3059 is the Sierra manufacturer part number itself, sold as a cross-reference equivalent to the listed OMC\/OEM numbers rather than a generic no-name copy.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat comes in the box with the 18-3059?\u003c\/strong\u003e The package includes one impeller (unit count of 1); it does not include the pump housing, gaskets, or the plate and cup components listed separately in the water pump kit lineup.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my water pump impeller needs replacing?\u003c\/strong\u003e Reduced water flow, engine overheating, or a visibly worn or cracked vane on the old impeller are signs the Evinrude water pump impeller, such as the 18-3059, needs replacement.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3059 come with a warranty?\u003c\/strong\u003e The Sierra 18-3059 impeller carries a limited warranty covering manufacturing defects.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the 18-3059 impeller manufactured?\u003c\/strong\u003e The Sierra 18-3059 impeller is manufactured in Italy.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size shaft outboards use the 18-3059?\u003c\/strong\u003e The 18-3059 fits both 20 inch and 25 inch shaft Evinrude outboards depending on the specific HP and year, as listed in the fitment details for this part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3059 the correct impeller for a 150 DI outboard?\u003c\/strong\u003e Yes, the Sierra 18-3059 impeller is the listed impeller for Evinrude 150 DI outboards from 1997 and up.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988138406107,"sku":"SIE-18-3059","price":26.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-1__23168.1753840679.500.750.jpg?v=1785188339","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-3059-water-pump-impeller-for-evinrude-johnson-omc-outboards-replaces-omc-395864-397131-5001593-includes-impeller-key","provider":"Good Vibes Marina","version":"1.0","type":"link"}