{"product_id":"water-pump-kit-for-mercury-mariner-outboards-replaces-oem-46-73640a2-sierra-18-3323","title":"Sierra 18-3323 Water Pump Kit for Mercury\/Mariner Outboard - Replaces 46-73640A2","description":"\u003cp\u003eThe Sierra 18-3323 Water Pump Kit is a complete cooling system rebuild kit for Mercury\/Mariner outboard motors. Rather than replacing individual worn components one at a time, this kit bundles the three parts that typically fail together as a water pump wears out, so the entire pump assembly can be renewed in a single job. It is built to meet or exceed original equipment quality, giving the outboard's cooling system reliable performance after installation.\u003c\/p\u003e\u003cp\u003eInside the kit you get an impeller, an upper pump housing, and a water pump base, each matched to the original equipment part numbers used on the applicable Mercury\/Mariner outboard water pump assembly. Because the impeller, housing, and base are packaged together, the parts are matched to work as a set rather than requiring the buyer to source and cross-check each component individually. The kit directly replaces Mercury\/Mariner OEM part number 46-73640A2, making it a straightforward like-for-like service part for a failing or worn outboard water pump.\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 18-3323\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Water Pump Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Mercury\/Mariner Outboard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.51 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Impeller (18-3007, O.E. 47-89983); Upper Pump Housing (18-3118, O.E. 46-77822A1); Water Pump Base (18-3423, O.E. 46-73640A1)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999315854\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 46-73640A2\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eMercury\/Mariner outboard motors using water pump assembly OEM 46-73640A2\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e46-73640A2\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3323 water pump kit include?\u003c\/strong\u003e The kit includes three parts: an impeller (Sierra 18-3007, O.E. 47-89983), an upper pump housing (Sierra 18-3118, O.E. 46-77822A1), and a water pump base (Sierra 18-3423, O.E. 46-73640A1).\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat outboard motors does the 18-3323 water pump kit fit?\u003c\/strong\u003e This kit is designed for Mercury\/Mariner outboard motors that use the water pump assembly corresponding to OEM part number 46-73640A2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich OEM part number does the Sierra 18-3323 replace?\u003c\/strong\u003e It directly replaces Mercury\/Mariner OEM part number 46-73640A2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3323 a genuine Mercury part?\u003c\/strong\u003e No, it is an aftermarket kit made by Sierra that is built to meet or exceed original equipment quality and serves as a direct replacement for Mercury\/Mariner OEM 46-73640A2.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3323 water pump kit weigh?\u003c\/strong\u003e The complete kit weighs 0.51 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDo I need to buy the impeller separately with this kit?\u003c\/strong\u003e No, the impeller is already included in the Sierra 18-3323 kit along with the upper pump housing and water pump base, so no separate impeller purchase is needed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I buy the individual components of the 18-3323 kit separately?\u003c\/strong\u003e The kit is made up of three individually numbered Sierra parts, the 18-3007 impeller, the 18-3118 upper pump housing, and the 18-3423 water pump base, which are bundled together as kit 18-3323.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy replace the entire water pump kit instead of just the impeller?\u003c\/strong\u003e The 18-3323 kit bundles the impeller with the upper pump housing and water pump base because these components wear together on a Mercury\/Mariner outboard, so replacing them as a set restores the full pump assembly rather than just one wear part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3323 water pump kit?\u003c\/strong\u003e The UPC for this Mercury\/Mariner outboard water pump kit is 030999315854.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs installation of the 18-3323 kit a DIY job?\u003c\/strong\u003e The kit provides the impeller, upper pump housing, and water pump base needed to service a Mercury\/Mariner outboard's water pump assembly as part of a routine cooling system repair or maintenance job.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988143878363,"sku":"SIE-18-3323","price":83.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3323_lg__93717.1558124481.500.750.jpg?v=1785188233","url":"https:\/\/www.goodvibesmarina.com\/products\/water-pump-kit-for-mercury-mariner-outboards-replaces-oem-46-73640a2-sierra-18-3323","provider":"Good Vibes Marina","version":"1.0","type":"link"}