Sierra 18-7801 Fuel Pump Kit, Replaces OMC 379777, for Johnson/Evinrude Outboard Motors

The Sierra 18-7801 Fuel Pump Kit restores fuel pumps built with a glass filter bowl and diaphragm, matching fuel pump model 305186. It is designed for use with select Johnson/Evinrude 28 HP, 35 HP, 40 HP, 50 HP, 60 HP, 75 HP, 80 HP, 90 HP, and 100 HP outboard engines. The kit provides the wear parts needed to rebuild this style of fuel pump rather than replacing the entire assembly, giving boat owners a cost-effective way to restore proper fuel delivery when a pump develops a leak, a cracked diaphragm, or a clogged filter.

Inside the kit you get a Sierra 18-7826 fuel filter, a diaphragm, a gasket, and a filter bowl gasket, covering the components that typically wear out or need to be replaced as a set during a rebuild. Sierra manufactures each part to meet or exceed the specifications of the original equipment part it replaces, so the rebuilt pump performs to factory standards. Because fuel pump housings and diaphragm designs vary across outboard model years, this kit is fit specific; confirm your existing pump uses the glass filter bowl and diaphragm design (model 305186) before ordering to ensure proper fit.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7801
• Product Type: Fuel Pump Repair Kit
• UPC: 030999236517
• Kit Contents: Sierra 18-7826 fuel filter, diaphragm, gasket, filter bowl gasket
• Compatible Fuel Pump Model: 305186 (glass filter bowl and diaphragm style)
• Engine Fitment: Select Johnson/Evinrude 28 HP, 35 HP, 40 HP, 50 HP, 60 HP, 75 HP, 80 HP, 90 HP, and 100 HP outboard engines
• OEM Cross Reference: OMC 379777, GLM 40800
• Weight: 0.04 pounds
• Product Dimensions: 0.39 x 0.39 x 0.39 inches
• Finish: Machined

Fitment

• Select Johnson/Evinrude 28 HP, 35 HP, 40 HP, 50 HP, 60 HP, 75 HP, 80 HP, 90 HP, and 100 HP outboard engines using a fuel pump with a glass filter bowl and diaphragm, model 305186

Replaces (OEM)

• OMC 379777
• GLM 40800

Frequently Asked Questions

What does the Sierra 18-7801 fuel pump kit include? The 18-7801 kit contains one Sierra 18-7826 fuel filter, one diaphragm, one gasket, and one filter bowl gasket, which are the parts needed to rebuild a compatible fuel pump.

Which outboard engines is the 18-7801 kit designed for? It is designed for select Johnson/Evinrude 28 HP, 35 HP, 40 HP, 50 HP, 60 HP, 75 HP, 80 HP, 90 HP, and 100 HP outboard engines.

Will this kit fit any fuel pump on a compatible horsepower engine? No, the 18-7801 kit is designed specifically for fuel pumps with a glass filter bowl and diaphragm, matching fuel pump model 305186, so the fitment is fit specific rather than universal across all pumps on those engines.

What OEM part numbers does the 18-7801 kit cross-reference to? The Sierra 18-7801 kit is interchangeable with OMC 379777 and GLM 40800.

How much does the fuel pump kit weigh? The Sierra 18-7801 fuel pump kit weighs 0.04 pounds.

What are the dimensions of the 18-7801 kit packaging? The kit measures 0.39 x 0.39 x 0.39 inches.

Is the Sierra 18-7801 kit a genuine OEM part or an aftermarket replacement? It is a Sierra aftermarket kit manufactured to meet or exceed the specifications of the original equipment fuel pump parts it replaces, rather than a factory OMC part.

Do I need to replace the entire fuel pump, or can I just use this kit? If your fuel pump uses the glass filter bowl and diaphragm design (model 305186), the 18-7801 kit lets you rebuild the pump with a new filter, diaphragm, and gaskets instead of replacing the whole assembly.

How do I know if my fuel pump matches this kit? Check that your pump is the glass filter bowl and diaphragm style, model 305186, and confirm against your engine's part numbers before ordering the 18-7801, since fit is specific to this pump design.

What fuel filter is included in the 18-7801 kit? The kit includes one Sierra 18-7826 fuel filter as part of the rebuild components.