{"product_id":"water-pump-kit-with-housing-for-mercruiser-alpha-i-generation-ii-and-vazer-replaces-817275a1-stainless-steel-sterndrive-cooling-service-kit-mpn-46-46502","title":"Engineered Marine Products Water Pump Kit with Housing 46-46502 for MerCruiser Alpha I Generation II \u0026 Vazer","description":"\u003cp\u003eThe Engineered Marine Products 46-46502 Water Pump Kit with Housing is a complete cooling system rebuild kit built for MerCruiser Alpha I - Generation II \u0026amp; Vazer drives with serial number 0D494569 and above. The kit is constructed from stainless steel for corrosion resistance in raw-water cooling service and includes the water pump housing assembly, face plate, and base gasket needed to restore proper cooling flow to the engine. It is engineered and sourced to meet OEM standards, giving boat owners a direct, affordable path to replace a worn or failing water pump assembly without sourcing each component separately. This kit is the aftermarket equivalent of Quicksilver part number 18-3147, which is the water pump kit specified for this serial number range. Inside the kit, the face plate corresponds to Quicksilver 18-3122 (O.E. 817276), the housing assembly is a non-separately-sold component (O.E. 817275A1), and the base gasket corresponds to Quicksilver 18-2564 (O.E. 27-43033-1). Engineered Marine Products backs the kit with a 1 year manufacturer warranty. Confirm your drive's serial number falls within the 0D494569-and-above range before ordering, since earlier Alpha I units and other MerCruiser drive generations use different water pump part numbers.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Engineered Marine Products\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 46-46502\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Stainless Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.389 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Type:\u003c\/strong\u003e Water Pump Kit with Housing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Water pump housing assembly, face plate, base gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e MerCruiser Alpha I - Generation II \u0026amp; Vazer, serial number 0D494569 and above\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces (Quicksilver):\u003c\/strong\u003e 18-3147\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Warranty:\u003c\/strong\u003e 1 year\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 840080428512\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMerCruiser Alpha I - Generation II \u0026amp; Vazer drives, serial number 0D494569 and above\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eQuicksilver 18-3147 (complete kit)\u003c\/li\u003e\n\u003cli\u003eQuicksilver 18-3122 \/ O.E. 817276 (face plate)\u003c\/li\u003e\n\u003cli\u003eO.E. 817275A1 (housing assembly)\u003c\/li\u003e\n\u003cli\u003eQuicksilver 18-2564 \/ O.E. 27-43033-1 (base gasket)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the EMP 46-46502 water pump kit fit?\u003c\/strong\u003e It is built for MerCruiser Alpha I - Generation II \u0026amp; Vazer drives with serial number 0D494569 and above; earlier Alpha I serial ranges use a different water pump kit number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs 46-46502 the same as Quicksilver 18-3147?\u003c\/strong\u003e Yes, the Engineered Marine Products 46-46502 kit is the aftermarket equivalent of Quicksilver part number 18-3147, which is the water pump kit listed for the Alpha I Generation II \u0026amp; Vazer serial range.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the 46-46502 water pump kit?\u003c\/strong\u003e The kit includes the water pump housing assembly, a face plate, and a base gasket, which are the components needed to rebuild the Alpha I Generation II water pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the kit include the impeller?\u003c\/strong\u003e The 46-46502 kit is documented as a housing assembly, face plate, and base gasket set; an impeller is not listed among its included components in the source data.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 46-46502 water pump kit made from?\u003c\/strong\u003e The Engineered Marine Products 46-46502 kit is made of stainless steel, chosen for corrosion resistance in raw-water cooling systems.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 46-46502 water pump kit weigh?\u003c\/strong\u003e This kit weighs 1.389 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow can I tell if my drive is in the correct serial range for this kit?\u003c\/strong\u003e Check your MerCruiser Alpha I - Generation II \u0026amp; Vazer drive's serial number; the 46-46502 kit applies to units with serial number 0D494569 and above.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the OEM part number for the face plate in this kit?\u003c\/strong\u003e The face plate included in the 46-46502 kit corresponds to Quicksilver 18-3122, factory O.E. Number 817276.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the housing assembly sold separately?\u003c\/strong\u003e No, the housing assembly in the 46-46502 kit is listed as a non-separately-sold (N.S.S.) component, factory O.E. Number 817275A1, meaning it is only available as part of the kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM number does the base gasket replace?\u003c\/strong\u003e The base gasket in the 46-46502 kit corresponds to Quicksilver 18-2564, factory O.E. Number 27-43033-1.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this a genuine Mercury part or aftermarket?\u003c\/strong\u003e The 46-46502 is an Engineered Marine Products aftermarket kit engineered to OEM standards as a replacement for Quicksilver 18-3147, not a genuine Mercury-branded part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 46-46502 kit come with a warranty?\u003c\/strong\u003e Engineered Marine Products backs the 46-46502 water pump kit with a 1 year manufacturer warranty.\u003c\/p\u003e","brand":"EMP","offers":[{"title":"Default Title","offer_id":48991289934043,"sku":"EMP-46-46502","price":112.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/EMP-46-46502-Mercury-Mercruiser-Water-Pump-Kit__74215.1722370024.500.750.jpg?v=1785188905","url":"https:\/\/www.goodvibesmarina.com\/products\/water-pump-kit-with-housing-for-mercruiser-alpha-i-generation-ii-and-vazer-replaces-817275a1-stainless-steel-sterndrive-cooling-service-kit-mpn-46-46502","provider":"Good Vibes Marina","version":"1.0","type":"link"}