Sierra 18-7334 Fuel Pump, Replaces Yamaha 6A0-24410 Series for 25-90 HP 2-Stroke Outboards 1984-2009

The Sierra 18-7334 Fuel Pump is a direct-fit replacement fuel pump built for Yamaha 25 HP to 90 HP 2-Stroke outboard engines produced from 1984 to 2009. It draws fuel from the tank and delivers it to the carburetor at the pressure and volume the engine needs to run cleanly across the RPM range. The pump body is constructed of plastic or alloy steel and uses a barb outlet connection with a BSPP connector for a secure, leak-resistant fuel line attachment. It mounts at the front of the powerhead in the standard front-mount position used on these Yamaha 2-Stroke outboards.

Each package includes one fuel pump. Because the pump relies on an internal diaphragm that wears over time, Sierra recommends pairing this pump with the Sierra 18-7797 Fuel Pump Diaphragm Kit when servicing or rebuilding. As a Sierra part, the 18-7334 is built to meet or exceed the specification of the original equipment pump it replaces, and it is covered under Sierra's standard limited warranty. It is a common service and replacement item for boat owners and marine technicians maintaining Yamaha 2-Stroke outboards in this horsepower and year range.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7334
• Product Type: Fuel Pump
• Fit Type: Universal Fit
• Vehicle Service Type: Boat
• Item Dimensions: 0.39 x 0.39 x 0.39 inches
• Weight: 0.38 pounds
• Body Material: Plastic or Alloy Steel
• Outlet Connection Type: Barb
• Connector Type: BSPP
• Mounting Type: Front Mount
• Included Components: One fuel pump per package
• UPC: 808282286040

Fitment

• Yamaha 25 HP to 90 HP 2-Stroke outboard engines, 1984-2009

Replaces (OEM)

• Mallory 9-35300
• Mallory 9-35305
• Yamaha 663-24410-00-00
• Yamaha 692-24410-00-00
• Yamaha 6A0-24410-00-00
• Yamaha 6A0-24410-01-00
• Yamaha 6A0-24410-02-00
• Yamaha 6A0-24410-03-00
• Yamaha 6A0-24410-04-00
• Yamaha 6A0-24410-05-00

Frequently Asked Questions

What engines does the Sierra 18-7334 fuel pump fit? The Sierra 18-7334 is built for Yamaha 25 HP to 90 HP 2-Stroke outboard engines made from 1984 to 2009.

Is the Sierra 18-7334 an OEM replacement or aftermarket part? It is an aftermarket Sierra fuel pump engineered to meet or exceed the specification of the original equipment fuel pump it replaces on covered Yamaha 2-Stroke outboards.

What OEM part numbers does the 18-7334 cross-reference to? The 18-7334 is interchangeable with Mallory 9-35300 and 9-35305, and with Yamaha 663-24410-00-00, 692-24410-00-00, 6A0-24410-00-00, 6A0-24410-01-00, 6A0-24410-02-00, 6A0-24410-03-00, 6A0-24410-04-00, and 6A0-24410-05-00.

How many fuel pumps come in one package of the 18-7334? One Sierra 18-7334 fuel pump is included per package.

What size is the Sierra 18-7334 fuel pump? The pump measures 0.39 x 0.39 x 0.39 inches and weighs 0.38 pounds.

What material is the Sierra 18-7334 fuel pump made of? The pump body is made of plastic or alloy steel, with a barb-style outlet and a BSPP connector for the fuel line.

Where does the 18-7334 fuel pump mount on the engine? It uses a front-mount configuration at the front of the powerhead, consistent with the fuel pump position on these Yamaha 2-Stroke outboards.

Do I need any other parts when installing the 18-7334? Sierra recommends using the 18-7797 Fuel Pump Diaphragm Kit alongside the 18-7334 fuel pump when servicing the fuel system.

Is the Sierra 18-7334 covered under warranty? Yes, the 18-7334 fuel pump is covered under Sierra's standard limited warranty like all Sierra parts.

Will the 18-7334 fit a 4-stroke Yamaha outboard? No, the 18-7334 is designed specifically for Yamaha 2-Stroke outboard engines in the 25 HP to 90 HP range, 1984 to 2009.