{"product_id":"sierra-18-3306-johnson-pump-f6-jabsco-impeller-kit","title":"Sierra 18-3306 Johnson Pump F6 \/ Jabsco Impeller Repair Kit","description":"\u003ch2\u003e\u003cstrong\u003eProduct Description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe Sierra \u003cstrong\u003e18-3306\u003c\/strong\u003e is a neoprene flexible-impeller repair kit for Johnson Pump F6-series raw-water pumps and equivalent Jabsco marine cooling-pump applications. The impeller measures approximately \u003cstrong\u003e2-1\/4 inches in diameter by 1-15\/16 inches wide\u003c\/strong\u003e and uses a splined brass hub. Sierra lists the kit for a broad range of Indmar-powered inboard boats, including Monsoon, Hammerhead and Ford Raptor engine packages.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSierra part number: \u003cstrong\u003e18-3306\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFlexible raw-water pump impeller repair kit\u003c\/li\u003e\n\u003cli\u003eNeoprene impeller material\u003c\/li\u003e\n\u003cli\u003eApproximately \u003cstrong\u003e2-1\/4 in. \/ 57.2 mm diameter\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eApproximately \u003cstrong\u003e1-15\/16 in. \/ 49.2 mm width\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e12 flexible blades\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eSplined brass drive hub\u003c\/li\u003e\n\u003cli\u003eFits Johnson Pump F6-series applications\u003c\/li\u003e\n\u003cli\u003eIncludes replacement O-ring \u003cstrong\u003e18-7123\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eUPC: \u003cstrong\u003e030999975690\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003ePump \/ Engine Compatibility\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eSierra identifies the 18-3306 for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAll compatible \u003cstrong\u003eJohnson Pump F6\u003c\/strong\u003e pumps\u003c\/li\u003e\n\u003cli\u003eIndmar Monsoon \u003cstrong\u003e320, 325, 330, 335, 340 and 350 hp\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eIndmar Hammerhead Callaway \u003cstrong\u003e365\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eIndmar Hammerhead \u003cstrong\u003e380, 383 and 400 hp\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eIndmar carbureted LCR engines\u003c\/li\u003e\n\u003cli\u003eIndmar \u003cstrong\u003e8.1L\u003c\/strong\u003e engines\u003c\/li\u003e\n\u003cli\u003eIndmar Ford Raptor \u003cstrong\u003e400, 450 and 575\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSupra, Moomba, MasterCraft and Tige boats using applicable Indmar engines\u003c\/li\u003e\n\u003cli\u003eChallenger 5.7L engines used in compatible Axis wake boats\u003c\/li\u003e\n\u003cli\u003e2022-and-newer Malibu and Axis \u003cstrong\u003eM5 and M6\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e2019–2021 M5 and M6 applications converted to the newer pump-housing design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEquivalent impeller references also place this part in compatible Johnson Pump, Jabsco and Yanmar marine cooling systems.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFitment Notice\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBefore ordering, confirm all three critical details:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe installed pump is a compatible \u003cstrong\u003eJohnson F6-series\u003c\/strong\u003e or equivalent pump.\u003c\/li\u003e\n\u003cli\u003eThe shaft uses the correct splined drive.\u003c\/li\u003e\n\u003cli\u003eThe original impeller number matches one of the supported cross references.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDo not rely on boat brand or engine horsepower alone. Some Malibu and Axis applications changed pump designs, and 2019–2021 engines require confirmation that the pump housing has been converted to the newer configuration.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWhen This Part Needs Replacement\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eReplace the impeller when:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCooling-water flow becomes weak or intermittent\u003c\/li\u003e\n\u003cli\u003eThe engine begins operating hotter than normal\u003c\/li\u003e\n\u003cli\u003eThe pump struggles to prime\u003c\/li\u003e\n\u003cli\u003eVanes are cracked, torn, hardened or permanently curled\u003c\/li\u003e\n\u003cli\u003ePieces are missing from the old impeller\u003c\/li\u003e\n\u003cli\u003eThe pump has been operated without water\u003c\/li\u003e\n\u003cli\u003eThe boat is undergoing scheduled annual cooling-system maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf vanes are missing, inspect downstream hoses, oil coolers, transmission coolers and heat exchangers for trapped fragments before restarting the engine.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInstallation Notes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDisconnect the battery and close the raw-water intake seacock.\u003c\/li\u003e\n\u003cli\u003eRemove the pump cover and note the original impeller orientation.\u003c\/li\u003e\n\u003cli\u003eExtract the old impeller without scoring the pump housing.\u003c\/li\u003e\n\u003cli\u003eInspect the cover plate, cam, shaft and pump body for excessive wear.\u003c\/li\u003e\n\u003cli\u003eRecover any missing impeller fragments from the cooling system.\u003c\/li\u003e\n\u003cli\u003eLightly lubricate the replacement impeller with glycerine or a suitable water-based impeller lubricant.\u003c\/li\u003e\n\u003cli\u003eAlign the splined hub carefully with the pump shaft.\u003c\/li\u003e\n\u003cli\u003eInstall the supplied O-ring and any application-specific gasket required by the pump.\u003c\/li\u003e\n\u003cli\u003eTighten the cover screws evenly.\u003c\/li\u003e\n\u003cli\u003eReopen the seacock before starting the engine.\u003c\/li\u003e\n\u003cli\u003eVerify strong water flow and inspect the pump for leaks immediately after startup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eAlternate \/ Cross-Reference Part Numbers\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSierra: \u003cstrong\u003e18-3306\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eJohnson Pump: \u003cstrong\u003e09-812B\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eJohnson Pump: \u003cstrong\u003e09-812B-1\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eJabsco: \u003cstrong\u003e13554-0001\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eJabsco: \u003cstrong\u003e13554-0001-P\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eYanmar: \u003cstrong\u003e119773-42600\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eYanmar: \u003cstrong\u003e119773-42600-00\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eIndmar: \u003cstrong\u003eS685007\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eIndmar: \u003cstrong\u003e685001\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eYamaha: \u003cstrong\u003e6TA-12457-00\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMallory Marine: \u003cstrong\u003e9-45704\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eO-ring included: \u003cstrong\u003eSierra 18-7123\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eUPC: \u003cstrong\u003e030999975690\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eCompatible \u0026amp; Related Parts\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eDirect cross-reference and related impeller kits for Johnson Pump F6 and Jabsco applications:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/johnson-pump-09-812b-1-impeller-kit-f6\"\u003eJohnson Pump 09-812B-1 Impeller Kit (F6)\u003c\/a\u003e – OEM Johnson Pump F6 impeller kit (direct cross-reference)\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/johnson-pump-09812bt1-kit-f6-impeller-w-thread-mc97\"\u003eJohnson Pump 09812BT1 Kit: F6 Impeller w\/Thread MC97\u003c\/a\u003e – F6 impeller kit with threaded cover variant\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/jabsco-6-135540001p-replacement-neoprene-impeller\"\u003eJabsco 6-135540001P Replacement Neoprene Impeller\u003c\/a\u003e – Jabsco 13554-0001-P equivalent neoprene impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/jabsco-neoprene-impeller-kit-17954-0001-p-flexible-raw-water-pump-service-kit\"\u003eJabsco Neoprene Impeller Kit 17954-0001-P\u003c\/a\u003e – flexible raw-water pump service kit\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/jabsco-neoprene-impeller-kit-17018-0001-p-flexible-raw-water-pump-service-kit\"\u003eJabsco Neoprene Impeller Kit 17018-0001-P\u003c\/a\u003e – flexible raw-water pump service kit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eParts Desk Insight\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe Sierra 18-3306 is best identified by its \u003cstrong\u003e57 mm diameter, approximately 49 mm width and splined hub\u003c\/strong\u003e. It is a common Johnson F6 and Indmar impeller, but similar-looking impellers can have different widths or shaft drives. Matching \u003cstrong\u003e09-812B, 13554-0001 or S685007\u003c\/strong\u003e is the safest fitment check.\u003c\/p\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51156140359716,"sku":"47-3306","price":116.89,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/images_fb21f716-2a2e-46ab-a873-6845e5fd8820.jpg?v=1785214362","url":"https:\/\/marisolmarine.com\/products\/sierra-18-3306-johnson-pump-f6-jabsco-impeller-kit","provider":"Marisol Marine Company","version":"1.0","type":"link"}