{"product_id":"sierra-18-3217-water-pump-impeller-kit-for-mercury-1-sterndrives-replaces-46-96148a5-fits-through-serial-no-d494568","title":"Sierra 18-3217 Impeller Kit for Mercury MerCruiser #1 Series and MR\/Alpha One Sterndrives","description":"\u003cp\u003eThe Sierra 18-3217 Impeller Kit is a complete water pump rebuild kit for Mercury MerCruiser sterndrives, covering standard housing units, #1 series units without a flush screw in the gear housing, and MR\/Alpha One lower units within the serial number ranges listed below. The kit is built around a neoprene rubber impeller, chosen for its flexibility and long-lasting performance under the heat and wear conditions of a marine cooling system. Every impeller is molded to Sierra's quality standards and inspected and tested for proper bonding before it ships.\u003c\/p\u003e\u003cp\u003eBeyond the impeller, the kit bundles every gasket, seal, and O-ring needed to fully reseal the water pump and gear housing in one job, so an installer is not left short a part mid-repair. Components include a water tube, mounting plate, seal ring, grommet, and a full set of pump and gear housing gaskets and O-rings. The kit is made to meet or exceed original equipment specifications for fit and performance, and ships in non-retail packaging.\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 18-3217\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Impeller Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Rubber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 4 x 3 x 1 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.37 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Items:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999236890\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit Contents:\u003c\/strong\u003e Water Tube (18-3109), Impeller (18-3017), Water Pump Base to Gear Housing Gasket (18-2919), Grommet (18-3110), Gear Housing Drain Screw Gaskets (18-2945, qty 2), Water Pump Base to Gear Housing Gasket (18-2826), Lower Water Pump to Wear Plate Gasket (18-2914), Upper Water Pump to Wear Plate Gasket (18-2915), Seal Ring (18-2944), Plate (18-3117), O-Rings (18-7158, 18-7162, 18-7173, 18-7176, 18-7196, 18-7426), Water Pump Gasket (18-2801)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Non-retail packaging\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMercury MerCruiser standard water pump housing, serial numbers 2495186 through 2763441\u003c\/li\u003e\n\u003cli\u003eMercury MerCruiser #1 units without a flush screw in the gear housing, serial numbers 2763442 through 6854392\u003c\/li\u003e\n\u003cli\u003eMercury MerCruiser MR\/Alpha One lower units, serial numbers 6854393 through 0D594568\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3217 impeller kit include?\u003c\/strong\u003e The kit includes one water tube, one impeller, seven gaskets, one grommet, one seal ring, one plate, and six O-rings, giving an installer everything needed to reseal the water pump and gear housing in a single job.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat serial number range does part 18-3217 fit?\u003c\/strong\u003e 18-3217 is designed for Mercury MerCruiser standard housing units in the serial range 2495186 through 2763441, #1 units without a flush screw in the gear housing from 2763442 through 6854392, and MR\/Alpha One lower units from 6854393 through 0D594568.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the impeller made from?\u003c\/strong\u003e The impeller in kit 18-3217 is made from a neoprene rubber compound, chosen for added flexibility and long-lasting performance in the cooling system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3217 kit come in retail packaging?\u003c\/strong\u003e No, the Sierra 18-3217 impeller kit ships in non-retail packaging.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3217 impeller kit weigh?\u003c\/strong\u003e The Sierra 18-3217 impeller kit weighs 0.37 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the impeller kit?\u003c\/strong\u003e The 18-3217 kit measures 4 x 3 x 1 inches as packaged.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3217 impeller kit made to OEM specifications?\u003c\/strong\u003e Yes, the 18-3217 kit is made to meet or exceed original equipment specifications for fit and performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many O-rings are in the 18-3217 kit and what are their part numbers?\u003c\/strong\u003e The kit contains six O-rings, Sierra part numbers 18-7158, 18-7162, 18-7173, 18-7176, 18-7196, and 18-7426.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the water tube part number included with 18-3217?\u003c\/strong\u003e The water tube included in the 18-3217 kit is Sierra part number 18-3109.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill 18-3217 fit a unit with a flush screw in the gear housing?\u003c\/strong\u003e 18-3217 is specified for units without a flush screw in the gear housing within the listed serial ranges; units retro-fitted with an Alpha style lower unit that lacks a pre-load pin in the top of the driveshaft require Alpha style parts instead.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs Sierra 18-3217 covered by a warranty?\u003c\/strong\u003e Yes, the 18-3217 impeller kit is covered under Sierra's customer satisfaction warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many gaskets come with the 18-3217 impeller kit?\u003c\/strong\u003e The kit includes seven gaskets total: two water pump base to gear housing gaskets (18-2919 and 18-2826), two gear housing drain screw gaskets (18-2945), a lower wear plate gasket (18-2914), an upper wear plate gasket (18-2915), and a water pump gasket (18-2801).\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988141650139,"sku":"SIE-18-3217","price":28.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/18-3217__95928.1739458782.500.750.jpg?v=1785188795","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-3217-water-pump-impeller-kit-for-mercury-1-sterndrives-replaces-46-96148a5-fits-through-serial-no-d494568","provider":"Good Vibes Marina","version":"1.0","type":"link"}