{"product_id":"water-pump-impeller-service-kit-for-mercruiser-alpha-one-mr-sterndrives-replaces-18-3217-mpn-46-00091","title":"Engineered Marine Products Impeller Service Kit, Replaces 18-3217, for MerCruiser Alpha\/MR Water Pump","description":"\u003cp\u003eThis impeller service kit from Engineered Marine Products (part number 46-00091) is built as a direct cross-reference for OEM Mercury\/MerCruiser part 18-3217, used in the water pump housing of MerCruiser sterndrive units. It is manufactured to OEM standards, giving boat owners and marine technicians a reliable, cost-effective option when servicing the cooling system water pump on compatible MerCruiser Alpha One and MR sterndrives.\u003c\/p\u003e\u003cp\u003eThe kit carries a machined exterior finish and measures 4 x 1.62 x 4 inches, with a shipping weight of 0.356 pounds, making it a compact, easy-to-handle part for routine water pump maintenance. Per the manufacturer's fitment chart, part 18-3217 is specified for MerCruiser drive units within the serial number range 2495186 through 0D594568, covering standard housing configurations, units without a flush screw in the gear housing, and MR\/Alpha I applications. Drives that fall outside this serial range, such as Alpha One Generation II, Vazer, Bravo, or inboard applications with plastic or brass pump bodies, use different part numbers per the same chart.\u003c\/p\u003e\u003cp\u003eRegular impeller service is a routine part of MerCruiser cooling system maintenance, and using a correctly cross-referenced kit like the 46-00091 helps keep the water pump operating properly.\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 46-00091\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 840080491783\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 4 x 1.62 x 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.356 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Machined\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 18-3217\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e MerCruiser I\/O cooling system water pump\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMerCruiser Alpha One and MR sterndrive water pump housings, drive unit serial numbers 2495186 through 0D594568\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e18-3217\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the Engineered Marine Products 46-00091 impeller kit replace?\u003c\/strong\u003e It cross-references Mercury\/MerCruiser part number 18-3217.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich MerCruiser drives is the 46-00091 impeller service kit designed for?\u003c\/strong\u003e MerCruiser Alpha One and MR sterndrive water pump housings within drive unit serial number range 2495186 through 0D594568 are the specified application for this kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this kit fit an Alpha One Generation II or Vazer drive?\u003c\/strong\u003e No. The 46-00091 kit is specified for the 2495186 through 0D594568 serial range; Alpha One Generation II and Vazer drives use a different water pump part number per the manufacturer's fitment chart.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the 46-00091 impeller service kit?\u003c\/strong\u003e The kit measures 4 x 1.62 x 4 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 46-00091 impeller kit weigh?\u003c\/strong\u003e It weighs 0.356 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 46-00091 a genuine OEM part or an aftermarket equivalent?\u003c\/strong\u003e It is manufactured by Engineered Marine Products as an aftermarket kit built to OEM standards and cross-referenced to Mercury\/MerCruiser part 18-3217, not a Mercury\/MerCruiser-branded part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat finish does the 46-00091 impeller kit have?\u003c\/strong\u003e It has a machined exterior finish.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the 46-00091 impeller service kit?\u003c\/strong\u003e The UPC is 840080491783.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 46-00091 kit fit Bravo or inboard MerCruiser applications?\u003c\/strong\u003e No. Bravo and inboard units with plastic or brass water pump bodies use separate part numbers per the manufacturer's fitment chart, different from the 18-3217 cross-reference used by the 46-00091 kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the 46-00091 compare to buying the OEM Mercury 18-3217 part directly?\u003c\/strong\u003e The Engineered Marine Products 46-00091 is built to OEM standards as a direct cross-reference for part 18-3217, offering the same application on compatible MerCruiser Alpha One and MR sterndrives.\u003c\/p\u003e","brand":"EMP","offers":[{"title":"Default Title","offer_id":48991289704667,"sku":"EMP-46-00091","price":34.39,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/EMP_46-00091_Mercury_MerCruiser_Impeller_Service_Kit__32945.1722360996.500.750.jpg?v=1785188124","url":"https:\/\/www.goodvibesmarina.com\/products\/water-pump-impeller-service-kit-for-mercruiser-alpha-one-mr-sterndrives-replaces-18-3217-mpn-46-00091","provider":"Good Vibes Marina","version":"1.0","type":"link"}