{"product_id":"sierra-18-7275-marine-fuel-pump-for-mercruiser-325-330-350-390-replaces-86247-omc-509410-mounting-gasket-included","title":"Sierra 18-7275 Fuel Pump, Replaces 2278747 3640670, Fits MerCruiser 325-GM and 330 GM","description":"\u003cp\u003eThe Sierra 18-7275 is a mechanical fuel pump built for MerCruiser 325-GM and 330 GM stern drive and inboard engines. It draws fuel from the tank and delivers it to the carburetor at the pressure and volume the engine's GM-based fuel system requires, and it is constructed of aluminum for corrosion resistance in the marine engine compartment. The pump includes a mounting gasket, so it is ready to bolt onto the engine block without sourcing a separate gasket. Its inlet connection measures 0.95 inches and its outlet connection measures 0.5 inches, both using barb-style fittings for a secure hose connection, and the mounting flange is identified as flange ID 41422. Overall dimensions are compact at 0.39 x 0.39 x 0.39 inches for the pump body, and the unit weighs 3.21 pounds. The 18-7275 is a direct cross-reference for OEM numbers 2278747 and 3640670, and it is built to meet or exceed the fit, form, and function of the original equipment fuel pump it replaces. Owners of MerCruiser 325-GM engines and 330 GM engines from serial number 4623115 and up can use this part number to replace a worn, leaking, or underperforming factory fuel pump without modifying the engine's fuel delivery components.\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 18-7275\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 3.21 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Dimensions:\u003c\/strong\u003e 0.39 x 0.39 x 0.39 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Tank Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection Size:\u003c\/strong\u003e 0.95 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutlet Connection Size:\u003c\/strong\u003e 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnector Type:\u003c\/strong\u003e Barb\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlange ID:\u003c\/strong\u003e 41422\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Components:\u003c\/strong\u003e Fuel pump with mounting gasket\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 030999322463\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMerCruiser 325-GM\u003c\/li\u003e\n\u003cli\u003eMerCruiser 330 GM, serial number 4623115 and up\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2278747\u003c\/li\u003e\n\u003cli\u003e3640670\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-7275 fuel pump fit?\u003c\/strong\u003e The 18-7275 fits MerCruiser 325-GM engines and MerCruiser 330 GM engines from serial number 4623115 and up.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part numbers does the 18-7275 replace?\u003c\/strong\u003e This pump directly replaces OEM numbers 2278747 and 3640670 used on MerCruiser 325-GM engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-7275 an electric or mechanical fuel pump?\u003c\/strong\u003e The Sierra 18-7275 is a mechanical fuel pump, driven by the engine rather than by an electric motor.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-7275 fuel pump made of?\u003c\/strong\u003e It is made of aluminum, chosen for its corrosion resistance in a marine engine compartment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-7275 come with a mounting gasket?\u003c\/strong\u003e Yes, the Sierra 18-7275 fuel pump includes a mounting gasket for installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size are the inlet and outlet fittings on the 18-7275?\u003c\/strong\u003e The inlet connection is 0.95 inches and the outlet connection is 0.5 inches, both barb-style fittings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-7275 fuel pump weigh?\u003c\/strong\u003e The 18-7275 weighs 3.21 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the Sierra 18-7275 compare to the original MerCruiser fuel pump?\u003c\/strong\u003e The 18-7275 is built to meet or exceed the fit, form, and function of the original equipment fuel pump it replaces, using OEM cross-reference numbers 2278747 and 3640670.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the physical dimensions of the 18-7275 fuel pump body?\u003c\/strong\u003e The pump body measures 0.39 x 0.39 x 0.39 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the flange identification for the 18-7275?\u003c\/strong\u003e The 18-7275 uses flange ID 41422 for mounting to the engine.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill the 18-7275 work on a 330 GM engine with an early serial number?\u003c\/strong\u003e The 18-7275 is specified for 330 GM engines from serial number 4623115 and up; earlier serial numbers are not covered by this fitment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-7275 a genuine Sierra part or aftermarket?\u003c\/strong\u003e The 18-7275 is a Sierra-branded fuel pump manufactured to meet or exceed the original equipment part it replaces.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988376596699,"sku":"SIE-18-7275","price":185.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-7275_lg__94273.1558131071.500.750.jpg?v=1785188554","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-7275-marine-fuel-pump-for-mercruiser-325-330-350-390-replaces-86247-omc-509410-mounting-gasket-included","provider":"Good Vibes Marina","version":"1.0","type":"link"}