Sierra 18-7350 Fuel Pump for Johnson/Evinrude 6/8/9.9/15 HP 1981-1998, Replaces 397274, 397839, 391638, 395091

The Sierra 18-7350 is a mechanical fuel pump built for Johnson/Evinrude 6, 8, 9.9, and 15 HP outboards from 1981-1998. It is a rotary vane style pump with an aluminum body, designed to meet or exceed original equipment quality so it draws fuel from the tank and delivers it to the carburetor at the pressure and volume the powerhead needs to run correctly. Both the inlet and outlet connections are threaded for a secure, leak-resistant fit to the factory fuel lines.

This pump is a direct replacement for a worn or failing OEM unit, correcting symptoms like hard starting, stalling at idle, hesitation under load, or inconsistent fuel delivery caused by a weak diaphragm or worn vanes in the original pump. It is a tank-mounted unit with a mechanical operating mode, matching the factory arrangement on these outboards, so no rewiring or electrical fuel system changes are needed. As a genuine Sierra part, it carries Sierra's standard customer satisfaction warranty.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-7350
• Fits: Johnson/Evinrude 6/8/9.9/15 HP outboards, 1981-1998
• Material: Aluminum
• Item Dimensions: 4 x 2.6 x 2.6 inches
• Weight: 0.2 pounds
• Mounting Type: Tank Mount
• Operation Mode: Mechanical
• Inlet/Outlet Connection: Threaded
• Product Style: Rotary Vane
• OEM Cross-Reference: 397274, 397839, 391638, 395091, Mallory 9-35350

Fitment

• Johnson/Evinrude 6 HP, 8 HP, 9.9 HP, and 15 HP outboards, 1981-1998

Replaces (OEM)

• 397274
• 397839
• 391638
• 395091
• Mallory 9-35350

Frequently Asked Questions

What engines does the Sierra 18-7350 fuel pump fit? The Sierra 18-7350 fits Johnson/Evinrude 6 HP, 8 HP, 9.9 HP, and 15 HP outboards from 1981-1998.

Is the 18-7350 a direct OEM replacement? Yes, it is built to meet or exceed original equipment quality and is designed as a direct replacement for the factory pump on covered Johnson/Evinrude outboards.

Which OEM part numbers does this pump replace? This fuel pump replaces Johnson/Evinrude numbers 397274, 397839, and 391638, as well as 395091, and it also crosses to Mallory 9-35350.

What is the 18-7350 made of? The pump body is aluminum, matching the material used on the original Johnson/Evinrude fuel pump for these outboards.

How is the fuel pump mounted and operated? The 18-7350 is a tank-mounted, mechanically operated pump, the same configuration used on the original equipment fuel system for these Johnson/Evinrude outboards.

What type of pump mechanism does the 18-7350 use? It is a rotary vane style fuel pump, the design used in the original Johnson/Evinrude pump it replaces.

What size are the inlet and outlet connections? Both the inlet and outlet connections on the Sierra 18-7350 are threaded fittings that mate to the standard fuel line connections on covered Johnson/Evinrude outboards.

What are the dimensions and weight of this fuel pump? The 18-7350 measures 4 x 2.6 x 2.6 inches and weighs 0.2 pounds.

Does the Sierra 18-7350 come with a warranty? Yes, the 18-7350 qualifies for and is covered under Sierra's customer satisfaction warranty as a genuine Sierra part.

What symptoms indicate this fuel pump needs replacing? Hard starting, stalling at idle, hesitation under load, or inconsistent fuel delivery on a Johnson/Evinrude 6, 8, 9.9, or 15 HP outboard from 1981-1998 typically point to a worn fuel pump like the 18-7350.

Is the 18-7350 an aftermarket or genuine part? The 18-7350 is a genuine Sierra fuel pump manufactured to meet or exceed original equipment specifications, not a generic aftermarket copy.