{"product_id":"sierra-18-3044-water-pump-impeller-for-johnson-evinrude-outboards-replaces-omc-385072-6-fin-neoprene","title":"Sierra 18-3044 Neoprene Water Pump Impeller, Replaces OMC 385072, for Johnson\/Evinrude 85-115 HP Outboards","description":"\u003cp\u003eThe Sierra 18-3044 is a neoprene water pump impeller built as a direct replacement for the factory impeller in select Johnson\/Evinrude outboard motors. The impeller is the wear component inside the outboard's water pump housing that circulates raw water through the powerhead to keep the engine cool, and a cracked, glazed, or worn-down impeller is one of the most common causes of overheating in outboard motors. This impeller features a 6-fin neoprene design in white, engineered to match OEM dimensions and rotation so it seats correctly in the original water pump housing.\u003c\/p\u003e\u003cp\u003eSierra manufactures this part to meet or exceed the specification of the original equipment part it replaces, and each package includes one impeller. It is sold as an individual wear part, so buyers doing a full water pump service should also plan to replace the housing gasket and wear plate as part of the same job if those show wear.\u003c\/p\u003e\u003cp\u003eThe 18-3044 is built for Johnson\/Evinrude outboards rated at 85 HP (1969-1972), 100 HP (1969-1972), and 115 HP (1969-1970). Confirm your outboard's horsepower and model year against this fitment before ordering, since Sierra offers different impeller part numbers for other year ranges on the same horsepower engines.\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 18-3044\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Neoprene\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e White\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Fins:\u003c\/strong\u003e 6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.41 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1 impeller per package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e Mallory 9-45220, GLM 89612, OMC 385072\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eJohnson\/Evinrude outboard, 85 HP, 1969-1972\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude outboard, 100 HP, 1969-1972\u003c\/li\u003e\n\u003cli\u003eJohnson\/Evinrude outboard, 115 HP, 1969-1970\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMallory 9-45220\u003c\/li\u003e\n\u003cli\u003eGLM 89612\u003c\/li\u003e\n\u003cli\u003eOMC 385072\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat outboards does the Sierra 18-3044 impeller fit?\u003c\/strong\u003e The Sierra 18-3044 fits Johnson\/Evinrude outboards rated at 85 HP for model years 1969-1972, 100 HP for model years 1969-1972, and 115 HP for model years 1969-1970.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3044 a genuine Sierra part or an aftermarket copy?\u003c\/strong\u003e It is a genuine Sierra-manufactured impeller, built as a replacement for the original equipment part and produced to meet or exceed the OEM specification it replaces.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-3044 cross-reference to?\u003c\/strong\u003e The 18-3044 is interchangeable with Mallory 9-45220, GLM 89612, and OMC 385072, so any of those numbers can be used to identify the same impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the impeller made from?\u003c\/strong\u003e The Sierra 18-3044 is molded from neoprene, a synthetic rubber chosen for its resistance to heat and wear inside the outboard's raw water pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many fins does the 18-3044 impeller have?\u003c\/strong\u003e This impeller has a 6-fin design, matching the original configuration used in the Johnson\/Evinrude water pump housings it fits.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many impellers come in one package?\u003c\/strong\u003e Each Sierra 18-3044 package contains one impeller.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 18-3044 impeller weigh?\u003c\/strong\u003e The Sierra 18-3044 weighs 0.41 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat causes an outboard water pump impeller to need replacement?\u003c\/strong\u003e Impellers like the 18-3044 wear down or crack over time from heat and friction inside the water pump housing, which reduces raw water flow and can lead to engine overheating.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3044 include the water pump housing or gasket?\u003c\/strong\u003e No, the Sierra 18-3044 is the impeller only; the housing and gasket are separate parts and should be inspected or replaced separately during a water pump service.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-3044 fit a Johnson\/Evinrude 85 HP from the 1980s?\u003c\/strong\u003e No, the Sierra 18-3044 is specified for the 85 HP Johnson\/Evinrude covering 1969-1972; later 85 HP model years use a different Sierra impeller part number.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs color or fin count a functional spec or just cosmetic?\u003c\/strong\u003e Fin count is functional on the 18-3044, since its 6-fin design is engineered to match the pump housing's flow requirements; the white color of the neoprene is not a performance factor.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988137095387,"sku":"SIE-18-3044","price":41.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3044_lg__40115.1558123211.500.750.jpg?v=1785188971","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-3044-water-pump-impeller-for-johnson-evinrude-outboards-replaces-omc-385072-6-fin-neoprene","provider":"Good Vibes Marina","version":"1.0","type":"link"}