{"product_id":"sierra-18-3239-water-pump-impeller-repair-kit-for-mercury-mariner-outboards-replaces-47-89981","title":"Sierra 18-3239 Impeller Repair Kit for Mercury\/Mariner Outboard, Replaces 47-89981","description":"\u003cp\u003eThe Sierra 18-3239 Impeller Repair Kit is a complete water pump rebuild kit for Mercury\/Mariner outboard motors. It bundles the three components needed to restore proper cooling system operation in one purchase: a replacement impeller, an impeller plate, and an O-ring, so the water pump housing can be rebuilt without hunting down individual parts separately. Keeping the water pump impeller in good condition is essential to outboard engine health, since a worn or cracked impeller reduces raw water flow to the engine and can lead to overheating. This kit is built to the fit and function of the original equipment parts it replaces, using materials designed to hold up in continuous exposure to saltwater and freshwater marine environments. The kit is intended for Mercury\/Mariner outboard engines and is a straightforward drop-in replacement during routine water pump service or when rebuilding a water pump housing. Sierra manufactures marine parts to OEM specifications and supplies engine manufacturers and boat builders with replacement components, so this kit is engineered to meet or exceed the performance of the original Mercury\/Mariner parts it replaces.\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 18-3239\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Impeller Repair Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Mercury Outboard Water Pumps and Impellers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Sierra 18-3039 Impeller, Sierra 18-3139 Impeller Plate, Sierra 18-7409 O-Ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1 kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.06 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999236906\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury\/Mariner outboard motors\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e47-89981 (impeller)\u003c\/li\u003e\n\u003cli\u003e46895 (impeller plate)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3239 Impeller Repair Kit include?\u003c\/strong\u003e The kit contains one Sierra 18-3039 impeller, one Sierra 18-3139 impeller plate, and one Sierra 18-7409 O-ring, giving you everything needed to rebuild the water pump housing in one purchase.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich engines does the 18-3239 kit fit?\u003c\/strong\u003e This impeller repair kit is designed for Mercury\/Mariner outboard motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the Sierra 18-3239 kit replace?\u003c\/strong\u003e The impeller in this kit replaces OEM number 47-89981, and the impeller plate replaces OEM number 46895.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the impeller sold separately from the plate and O-ring?\u003c\/strong\u003e No, the Sierra 18-3239 is packaged as a complete kit with the impeller, impeller plate, and O-ring included together rather than sold individually.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3239 Impeller Repair Kit weigh?\u003c\/strong\u003e The kit weighs 0.06 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e The 18-3239 kit is a genuine Sierra manufactured product, built to meet or exceed the specifications of the original equipment parts it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need any other parts to rebuild my water pump with this kit?\u003c\/strong\u003e The 18-3239 kit supplies the impeller, impeller plate, and O-ring; depending on the condition of your water pump housing, you may still need a separate housing or gasket set if those components are worn.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3239 kit?\u003c\/strong\u003e The UPC for the Sierra 18-3239 Impeller Repair Kit is 030999236906.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy does the water pump impeller need periodic replacement?\u003c\/strong\u003e The impeller in a Mercury\/Mariner outboard water pump wears down over time and can crack or lose its vanes, which reduces cooling water flow and risks engine overheating; the 18-3239 kit provides the parts to replace it.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan this kit be used on both Mercury and Mariner outboards?\u003c\/strong\u003e Yes, the Sierra 18-3239 Impeller Repair Kit is designed for use on Mercury and Mariner outboard motors.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988141912283,"sku":"SIE-18-3239","price":18.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3239__94361.1737891159.500.750.jpg?v=1785188498","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-3239-water-pump-impeller-repair-kit-for-mercury-mariner-outboards-replaces-47-89981","provider":"Good Vibes Marina","version":"1.0","type":"link"}