{"product_id":"sierra-18-3399-water-pump-kit-with-housing-replaces-omc-396933-fits-evinrude-johnson-outboards","title":"Sierra 18-3399 Water Pump Kit with Housing, Replaces OMC 0396933, Fits 50 HP 1986-88 Outboards","description":"\u003cp\u003eThe Sierra 18-3399 is a complete water pump kit built for 50 HP outboard engines from the 1986-88 model years. Unlike a basic repair kit, this version includes a full water pump housing, so it covers everything needed to rebuild the cooling system's water pump in one purchase rather than requiring the housing to be sourced separately.\u003c\/p\u003e\u003cp\u003eInside the kit are the core wear components that fail over time and cause overheating: the impeller (18-3368), wear plate (18-3343), and water pump housing (18-3336), along with the oil seal (18-2705), wear plate gasket (18-2709), grommet (18-3337), and O-ring (18-7134) needed to seal the assembly. Mounting hardware is included as stainless steel bolts (18-3365 and 18-3369) for corrosion resistance in a marine environment. The housing has a white finish. Sierra kits are assembled to meet or exceed the original equipment manufacturer's specifications, and the impeller compound is formulated for this specific application.\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 18-3399\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Water Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes Housing:\u003c\/strong\u003e Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.06 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless Steel (mounting bolts)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Oil Seal 18-2705, Wear Plate Gasket 18-2709, Water Pump Housing 18-3336, Grommet 18-3337, Wear Plate 18-3343, Stainless Steel Bolts 18-3365, Impeller 18-3368, Stainless Steel Bolts 18-3369, O-Ring 18-7134\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e 50 HP outboards, 1986-88\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999753649\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e50 HP outboards, 1986-88\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e0396933\u003c\/li\u003e\n\u003cli\u003e0439077\u003c\/li\u003e\n\u003cli\u003e9-48207\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the Sierra 18-3399 water pump kit?\u003c\/strong\u003e The kit includes an oil seal (18-2705), wear plate gasket (18-2709), water pump housing (18-3336), grommet (18-3337), wear plate (18-3343), stainless steel bolts (18-3365 and 18-3369), impeller (18-3368), and O-ring (18-7134), giving you everything needed for a complete water pump rebuild.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3399 kit come with a housing?\u003c\/strong\u003e Yes, the 18-3399 kit includes the water pump housing (18-3336), unlike housing-less versions of the kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-3399 fit?\u003c\/strong\u003e This kit fits 50 HP outboards from the 1986-88 model years.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-3399 water pump kit replace?\u003c\/strong\u003e It cross-references to Evinrude\/Johnson 0396933 and 0439077, and Mallory 9-48207.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat impeller comes in this kit?\u003c\/strong\u003e Impeller 18-3368 is the impeller included in the Sierra 18-3399 water pump kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the difference between kit 18-3399 and kit 18-3385 for the same engine?\u003c\/strong\u003e Both kits fit 50 HP outboards from 1986-88, but 18-3399 includes the water pump housing while 18-3385 is the equivalent kit without a housing, intended for buyers reusing their existing housing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the water pump kit weigh?\u003c\/strong\u003e The Sierra 18-3399 water pump kit weighs 1.06 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material are the mounting bolts made of?\u003c\/strong\u003e The mounting bolts included in kit 18-3399 are stainless steel for corrosion resistance in marine use.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the kit include an oil seal and gasket?\u003c\/strong\u003e Yes, oil seal 18-2705 and wear plate gasket 18-2709 are both included in the 18-3399 kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the water pump housing?\u003c\/strong\u003e The water pump housing included in the 18-3399 kit is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3399 a genuine Sierra part?\u003c\/strong\u003e Yes, 18-3399 is a genuine Sierra part number, not an aftermarket clone, and is manufactured to meet or exceed original equipment specifications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for this water pump kit?\u003c\/strong\u003e The UPC for the Sierra 18-3399 water pump kit is 030999753649.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988147679451,"sku":"SIE-18-3399","price":88.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3399_lg__30502.1558125235.500.750.jpg?v=1785188602","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-3399-water-pump-kit-with-housing-replaces-omc-396933-fits-evinrude-johnson-outboards","provider":"Good Vibes Marina","version":"1.0","type":"link"}