{"product_id":"sierra-18-3007-water-pump-impeller-for-mercury-outboards-30-70-hp-replaces-mercury-47-89983-47-89983t","title":"Sierra 18-3007 Impeller, Replaces Mercury Marine 47-89983T2, Fits 30-70 HP Outboards","description":"\u003cp\u003eThe Sierra 18-3007 is a replacement water pump impeller engineered for the cooling system of Mercury Marine outboard engines. The impeller is the rotating component inside the outboard's water pump housing that draws raw water from the lake or sea and circulates it through the engine block to keep operating temperatures in check. A worn, cracked, or melted impeller is one of the most common causes of outboard overheating, and replacing it on a routine schedule protects the powerhead from heat damage.\u003c\/p\u003e\u003cp\u003eThis impeller is built from black aluminum with flexible vanes designed to maintain consistent water flow at idle through wide-open throttle. It is designed as a direct fit for the Mercury Marine 47-89983 water pump impeller, giving boat owners a straightforward drop-in replacement during a scheduled water pump service or full water pump kit rebuild. The part is intended for outboard applications rated up to 70 horsepower with 4-stroke engines using a transom-mounted water pump and running on gasoline.\u003c\/p\u003e\u003cp\u003eEach unit ships as a single impeller (quantity of 1) for use in the lower unit water pump assembly. Sierra backs the part with its standard limited warranty against manufacturing defects.\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 18-3007\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Impeller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine Type:\u003c\/strong\u003e 4 Stroke\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Transom Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuel Type:\u003c\/strong\u003e Gasoline\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Horsepower:\u003c\/strong\u003e 70 Horsepower\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRecommended Use:\u003c\/strong\u003e Cooling the outboard motor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999315021\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 47-89983T2, 47-89983Q1, 47-89983\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e4-stroke outboards up to 70 horsepower with a transom-mounted water pump\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e47-89983T2\u003c\/li\u003e\n\u003cli\u003e47-89983Q1\u003c\/li\u003e\n\u003cli\u003e47-89983\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3007 impeller replace?\u003c\/strong\u003e The Sierra 18-3007 impeller replaces Mercury Marine OEM numbers 47-89983T2, 47-89983Q1, and 47-89983, so it is a direct swap wherever those part numbers are called for.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat horsepower range is the 18-3007 impeller designed for?\u003c\/strong\u003e This impeller is designed for 4-stroke outboard engines rated up to 70 horsepower that use a transom-mounted, gasoline-fueled water pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in the package?\u003c\/strong\u003e One Sierra 18-3007 impeller is included per package; it is sold as a single unit rather than as part of a full water pump kit.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Sierra 18-3007 impeller made from?\u003c\/strong\u003e The 18-3007 is made from black aluminum, matching the construction of the Mercury Marine impeller it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-3007 impeller weigh?\u003c\/strong\u003e The impeller weighs 0.1 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3007 a genuine Mercury Marine part or an aftermarket replacement?\u003c\/strong\u003e The 18-3007 is a Sierra-brand aftermarket impeller manufactured as a direct equivalent to Mercury Marine part 47-89983, not an OEM Mercury Marine part.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should I replace the water pump impeller on my outboard?\u003c\/strong\u003e A water pump impeller like the Sierra 18-3007 should be replaced on a routine maintenance schedule or immediately if the outboard is overheating, since worn or cracked vanes reduce raw water flow to the cooling system.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the Sierra 18-3007 impeller include gaskets for the water pump housing?\u003c\/strong\u003e No, the 18-3007 package contains only the impeller itself; water pump housing gaskets are separate parts.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3007 impeller?\u003c\/strong\u003e The Sierra 18-3007 impeller carries UPC 030999315021.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3007 impeller covered by a warranty?\u003c\/strong\u003e Yes, the 18-3007 is covered under Sierra's standard limited warranty against manufacturing defects.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat engine type is the 18-3007 impeller compatible with?\u003c\/strong\u003e It is compatible with 4-stroke gasoline outboard engines using a transom-mounted water pump, up to 70 horsepower.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136833243,"sku":"SIE-18-3007","price":17.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3007_lg__68032.1558125082.500.750.jpg?v=1785188882","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-3007-water-pump-impeller-for-mercury-outboards-30-70-hp-replaces-mercury-47-89983-47-89983t","provider":"Good Vibes Marina","version":"1.0","type":"link"}