Sierra 18-7278 Marine Fuel Pump, Replaces 982240, Fits GM V-8 283/305/350/400 Engines

The Sierra 18-7278 is an aluminum-bodied marine fuel pump built to deliver fuel from tank to carburetor on GM V-8 marine engines in the 283, 305, 350, and 400 cubic inch displacements. Its aluminum construction is designed to hold up in the corrosive marine environment, and it is manufactured to meet or exceed the performance of the original equipment part it replaces. The pump uses flange identification numbers 41419 and M73020, which are the reference numbers used to confirm a correct mechanical fit on the engine, and it includes a mounting gasket so the pump is ready to install without sourcing a separate gasket. Fuel connections are made through barb-style inlet and outlet fittings for standard marine fuel hose. Sierra manufactures replacement parts for many OEM engine and boat builders, and the 18-7278 is engineered to the same fit, form, and function standard as the original pump it is replacing. Boat owners and marine technicians use this pump when replacing a worn or failing mechanical fuel pump on a compatible GM V-8 marine engine, restoring reliable fuel delivery to the carburetor. Because it is identified by Sierra part number 18-7278, it can be ordered directly by that number, and it also cross-references to several OEM part numbers for buyers working from an original equipment number.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7278
• Flange Identification Number: 41419, M73020
• Engine Fitment: GM (V-8) 283, 305, 350, 400 cid
• OEM Equivalent Part Numbers: 982240, 985602, 985603, 86234A4, 509395
• Weight: 1.55 pounds
• Material: Aluminum
• Item Dimensions: 0.39 x 0.39 x 0.39 inches
• Inlet Connection Type: Hose Barb
• Outlet Connection Type: Barb
• Gas Type: Gasoline
• UPC: 030999322494

Fitment

• GM (V-8) 283, 305, 350, 400 cid marine engines

Replaces (OEM)

• 982240
• 985602
• 985603
• 86234A4
• 509395

Frequently Asked Questions

What engines does the Sierra 18-7278 fuel pump fit? The Sierra 18-7278 is built for GM V-8 marine engines in the 283, 305, 350, and 400 cubic inch displacements.

What OEM part numbers does the Sierra 18-7278 replace? It cross-references to OEM numbers 982240, 985602, 985603, Mercury Marine 86234A4, and OMC 509395.

What is the flange identification number on the Sierra 18-7278? Flange I.D. Numbers 41419 and M73020 identify the correct mounting flange for the Sierra 18-7278 fuel pump.

How much does the Sierra 18-7278 fuel pump weigh? 1.55 pounds is the shipping weight of the Sierra 18-7278 marine fuel pump.

What material is the Sierra 18-7278 fuel pump made from? Aluminum construction gives the Sierra 18-7278 the corrosion resistance needed in a marine environment.

Is the Sierra 18-7278 a genuine Sierra part? Yes, the 18-7278 is a genuine Sierra-branded fuel pump manufactured to meet or exceed the original equipment part it replaces.

What type of fuel line connections does the Sierra 18-7278 use? Barb-style inlet and outlet fittings are used on the Sierra 18-7278 for standard marine fuel hose.

Does the Sierra 18-7278 come with a mounting gasket? Yes, a mounting gasket is included with the Sierra 18-7278 fuel pump.

Can the Sierra 18-7278 replace a Mercury Marine fuel pump? Its cross-reference to Mercury Marine 86234A4 makes the Sierra 18-7278 a compatible equivalent for that OEM number.

What warranty applies to the Sierra 18-7278 fuel pump? The Sierra 18-7278 is covered by a limited warranty from Sierra.

What is the UPC for the Sierra 18-7278? 030999322494 is the UPC assigned to the Sierra 18-7278 fuel pump.