Johnson Evinrude 40-300HP Fuel/Oil Pump 8403

Compatible Applications

Notable Verified Fitment Families

• 1990 60HP electric-start and trim models
• 1991-1992 60-70HP applications
• 1991-1992 85-115HP applications
• 1991-1992 120-140HP applications
• 1991-1996 150-175HP V6 applications
• 1991-1997 200-225HP V6 applications
• 1991-1995 250-300HP applications
• 1993-1997 50-70HP models
• 1993-1997 90-140HP models
• 1997-2000 90-250HP Johnson / Evinrude models
• 1999-2001 commercial and jet-drive applications
• 2000-2002 carbureted 90-175HP models
• Standard and counter-rotation engines
• 20", 25", and 30" shaft configurations where specified

OEM & Cross Reference Numbers

Pro Marine Replacement Available

Pro Marine 8403P Electric Fuel & Oil Pump

Looking for a lower-cost replacement option? The Pro Marine 8403P is the Pro Marine branded version for these compatible Johnson / Evinrude fuel and oil pump applications.

It is a good alternative when replacing an older OMC / BRP pump that cross references one of the OEM numbers listed above.

View Pro Marine 8403P Fuel & Oil Pump

What This Part is Used For

This pump is part of the engine's combined fuel and oil delivery system. On compatible Johnson and Evinrude two-stroke engines, the assembly supplies fuel to the engine while also working with the oil-injection system to provide lubrication.

A weak, leaking, or failed fuel/oil pump can contribute to hard starting, poor acceleration, fuel starvation, inconsistent engine operation, or oil-delivery concerns.

Because these engines use several different pump configurations and wiring arrangements, always compare the original pump, connector configuration, engine model number, and OEM part number before installation.

Common Reasons for Replacement

• Fuel leakage from the pump assembly
• Hard starting or extended cranking
• Fuel starvation at higher RPM
• Loss of engine power under load
• Old or damaged pump housing
• Replacement of an obsolete earlier 3-wire pump
• Fuel or oil delivery issues traced to the pump assembly

Important Installation Information

• Verify the complete engine model number before ordering
• Match the original pump to one of the OEM numbers listed above
• Check the electrical connector and warning-system wiring
• Harness 174710 may be needed if the engine lacks "No Oil Warning" wiring
• Bracket 331122 is required on applicable 1984-1985 V6 cross-scavenged engines
• The supplied catalog excludes 2-cylinder 40HP and 50HP engines from the 3-wire pump replacement note

FAQ

What engines does fuel/oil pump 8403 fit?
The supplied application list includes a very large range of Johnson and Evinrude outboards, primarily from 1990 through 2002, with verified applications spanning many 40-300HP engine families.

Does it fit Johnson and Evinrude 150HP and 175HP engines?
Yes. The supplied fitment includes a very large number of 150HP and 175HP Johnson and Evinrude models from the early 1990s through later model years.

Does it fit 200HP and 225HP V6 engines?
Yes. Numerous 200HP and 225HP standard, counter-rotation, commercial, H.O., and different shaft-length configurations are included in the verified list.

Does it fit 250HP and 300HP engines?
Yes. The supplied fitment includes numerous 250HP and 300HP Johnson / Evinrude applications, particularly from the early-to-mid 1990s.

Can this replace older 3-wire pumps?
The supplied catalog specifically states that the kit can replace 3-wire pumps on all applicable motors except 2-cylinder 40HP and 50HP engines.

Do I need an additional wiring harness?
Possibly. The catalog instructs installers to use harness 174710 on motors that do not have "No Oil Warning" wiring.

Are any mounting parts required?
The catalog specifies bracket 331122 for applicable 1984-1985 V6 cross-scavenged motors.

Is there a Pro Marine version?
Yes. The Pro Marine 8403P electric fuel and oil pump is linked above.

How should I verify fitment?
Match your complete engine model number and original fuel/oil pump OEM number to the application and cross-reference information above. Do not order by horsepower alone.

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