{"product_id":"neoprene-water-pump-impeller-kit-replaces-jabsco-920-0001-sierra-18-3306-12-spline-8-fin","title":"Sierra 18-3306 Neoprene Impeller, 12 Spline 8 Fin, Replaces Jabsco 920-0001","description":"\u003cp\u003eThe Sierra 18-3306 is a neoprene water pump impeller built as a direct replacement for Jabsco 920-0001. It features a 12-spline hub design paired with 8 flexible neoprene fins, which engage the pump housing and drive shaft to circulate raw water through the cooling system. Neoprene construction is the standard material choice for marine impellers because it offers reliable flexibility and wear resistance under continuous water contact and rotational flexing.\u003c\/p\u003e\u003cp\u003eThis impeller is intended as a service replacement part for water pumps that use Jabsco 920-0001, restoring proper raw water flow when an impeller has worn, cracked, or lost fin memory. Installing a fresh impeller at the correct interval helps prevent overheating caused by reduced water flow through the pump. The kit ships as a single impeller unit ready to install into the corresponding pump housing.\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 18-3306\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Neoprene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpline Count:\u003c\/strong\u003e 12 splines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFin Count:\u003c\/strong\u003e 8 fins\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.37 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Dimensions:\u003c\/strong\u003e 12.7 cm L x 11.43 cm W x 6.858 cm H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Italy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999975690\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eFits water pumps designed for the Jabsco 920-0001 impeller.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003eJabsco 920-0001\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3306 impeller replace?\u003c\/strong\u003e The Sierra 18-3306 is a direct replacement for Jabsco 920-0001, so it installs in place of that impeller without modification.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-3306 impeller made from?\u003c\/strong\u003e It is molded from neoprene, the standard flexible rubber compound used for raw water pump impellers, which holds up to continuous water contact and repeated fin flexing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many splines and fins does this impeller have?\u003c\/strong\u003e The Sierra 18-3306 has a 12-spline hub and 8 fins.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3306 impeller weigh?\u003c\/strong\u003e This impeller weighs 0.37 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3306 a genuine Sierra part or aftermarket?\u003c\/strong\u003e It is a Sierra-branded impeller, sold under Sierra's own part number 18-3306 as a replacement for Jabsco 920-0001.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this impeller fit any water pump?\u003c\/strong\u003e The 18-3306 is designed to fit pumps that use the Jabsco 920-0001 impeller; check your existing impeller's part number before ordering to confirm a match.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included when I order the 18-3306?\u003c\/strong\u003e The order includes one Sierra 18-3306 neoprene impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow do I know if my impeller needs replacing?\u003c\/strong\u003e Cracked, torn, or stiff fins on the impeller, or reduced raw water flow from the engine, are signs the impeller should be replaced with a part such as the Sierra 18-3306.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhere is the Sierra 18-3306 impeller made?\u003c\/strong\u003e The country of origin listed for this impeller is Italy.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3306 use a specific spline count that I need to match?\u003c\/strong\u003e Yes, the 18-3306 uses a 12-spline hub, so it should only be used on pumps requiring that spline configuration, as with the Jabsco 920-0001 it replaces.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988143059163,"sku":"SIE-18-3306","price":42.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Untitled-1__87643.1753840677.500.750.jpg?v=1785188705","url":"https:\/\/www.goodvibesmarina.com\/products\/neoprene-water-pump-impeller-kit-replaces-jabsco-920-0001-sierra-18-3306-12-spline-8-fin","provider":"Good Vibes Marina","version":"1.0","type":"link"}