{"product_id":"sierra-18-3012-water-pump-impeller-for-mercury-mariner-outboards-replaces-47-56780-47-65958-47-89982","title":"Sierra 18-3012 Neoprene Impeller, Replaces Mercury 47-22748, for Mercury\/Mariner Outboard Motors","description":"\u003cp\u003eThe Sierra 18-3012 is a marine neoprene water pump impeller built for Mercury and Mariner outboard motors. The impeller drives raw water through the outboard's cooling system, and its molded neoprene body with 6 flexible fins is formulated to withstand the heat and constant flexing that occur inside a marine water pump housing while circulating water to cool the engine. Neoprene is the standard material for outboard impellers because it holds its shape and seal against the pump housing wall even after repeated dry-start exposure, helping maintain consistent water flow to the powerhead.\u003c\/p\u003e\u003cp\u003eEach package includes one impeller, ready to install as a direct replacement during routine water pump maintenance or when an impeller has worn, cracked, or lost fins. Sierra states that every Sierra part meets or exceeds the original equipment part it replaces, giving outboard owners a maintenance part built to the same performance standard as the factory impeller. This impeller is designed specifically for Mercury and Mariner outboard engines and is sold under the Sierra brand, a recognized supplier of marine engine parts.\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 18-3012\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 Neoprene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Fins:\u003c\/strong\u003e 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engine Type:\u003c\/strong\u003e 4 Stroke\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.03 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999237132\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity:\u003c\/strong\u003e 1 impeller per package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited Warranty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 47-22748\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eDesigned for Mercury and Mariner outboard motors.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cp\u003e47-22748\u003c\/p\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat does the Sierra 18-3012 impeller fit?\u003c\/strong\u003e The Sierra 18-3012 is designed for Mercury and Mariner outboard motors.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the 18-3012 replace?\u003c\/strong\u003e The Sierra 18-3012 replaces Mercury Marine part number 47-22748.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-3012 impeller made from?\u003c\/strong\u003e It is made from neoprene, a flexible rubber compound formulated to hold its shape and seal against the water pump housing under the heat and friction of engine operation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many fins does the 18-3012 impeller have?\u003c\/strong\u003e The Sierra 18-3012 has 6 fins.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in one package?\u003c\/strong\u003e One Sierra 18-3012 impeller is included per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3012 impeller weigh?\u003c\/strong\u003e The Sierra 18-3012 weighs 0.03 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Sierra 18-3012 a genuine OEM part or an aftermarket replacement?\u003c\/strong\u003e The 18-3012 is a Sierra-brand aftermarket impeller manufactured to meet or exceed the performance of the original Mercury 47-22748 equipment part it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhen should this impeller be replaced?\u003c\/strong\u003e The 18-3012 should be installed when a Mercury or Mariner outboard's water pump impeller shows worn, cracked, or missing fins, or as part of routine water pump maintenance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the Sierra 18-3012 impeller?\u003c\/strong\u003e The Sierra 18-3012 impeller is white.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3012 come with installation hardware like a gasket or housing?\u003c\/strong\u003e The package includes only the impeller itself, with one unit per package.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Sierra 18-3012 impeller?\u003c\/strong\u003e The UPC for the Sierra 18-3012 impeller is 030999237132.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988136669403,"sku":"SIE-18-3012","price":23.82,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3012_lg__93407.1558125276.500.750.jpg?v=1785188269","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-3012-water-pump-impeller-for-mercury-mariner-outboards-replaces-47-56780-47-65958-47-89982","provider":"Good Vibes Marina","version":"1.0","type":"link"}