LEIMO KPARTS Fuel Pump for Johnson/Evinrude Outboards 25–140 HP — Replacement Kit with Filter & Gasket

LEIMO KPARTS 438559 is a direct-fit replacement fuel pump kit for Johnson and Evinrude outboards (25–140 HP) that restores reliable fuel flow and includes gasket, filter and clip for straightforward installation.

If your older Johnson or Evinrude outboard hesitates to start, stalls under load, or smells like fuel, a worn fuel pump is a common cause. This LEIMO KPARTS assembly matches OEM interchange numbers (385784, 0438559, 433390, 395712, 398385, 438557) and comes with the filter and gasket needed to bring fuel delivery back to specification without modification.

Which engines and model years will this pump fit?

This pump is designed for late-production Johnson and Evinrude V4 and V6 outboards from the late 1980s and fits a wide horsepower range from 25 to 140 HP. It lists specific 1987–1988 model designations and works with Fuel Systems Accumix kits for small displacement engines.

• Fits Johnson/Evinrude late-production 1987 models (J6, J8, E6, E8 series).
• Compatible horsepower range: 25–140 HP; also cross-referenced to larger Crosflow engines.
• Interchangeable with part numbers: 385784, 0438559, 433390, 395712, 398385, 438559, 438557.
• V6 applications typically require two pumps—verify engine configuration before ordering.

How will replacing the fuel pump change engine performance?

Installing a fresh pump generally returns steady fuel pressure, which improves starting, smoothness and throttle response. You should notice fewer stalls and reduced fuel odor when the pump and filter are operating properly.

• Restores consistent fuel flow for easier cold and warm starts.
• Helps eliminate surging, stalling or hesitation under load.
• Replaces degraded diaphragms or valves that cause vapor or leaks.
• Includes a new inline filter to prevent debris-related problems.

Is installation difficult and what comes in the kit?

The kit is engineered for a bolt-on swap with no permanent modifications required; basic hand tools and routine mechanical skills are sufficient for most DIYers. Packaging includes the items needed for the pump mount and immediate startup after installation.

• Kit contents: 1 fuel pump, 1 gasket, 1 fuel filter and 1 retaining clip.
• Designed to match OEM mounting points and hose connections.
• Simple clamp and hose transfers—no machining or drilling required.
• Suggested inspection: replace aged fuel lines and clamps while accessible.

How do I confirm this pump is the right replacement for my boat?

Compare the part numbers stamped on your current pump and consult your engine model plate; the pump also lists common interchange numbers used by Johnson/Evinrude. If your engine is a V6, remember many V6 late-models require two pumps—one per bank.

• Match one of the interchange numbers: 385784, 395712, 398385, 433390, 438559, 0438559, 438557.
• Check engine model/year codes like J6RCUD, E6RCUD, J8RCUD, etc.
• Confirm horsepower rating on the engine plate (25–140 HP covered).
• Contact a mechanic if your engine shows different fuel system variants.

Who is this for: Boat owners, marine mechanics and restoration projects needing a dependable, economical replacement fuel pump for late-1980s Johnson and Evinrude outboards. It's particularly useful if you want an OEM-compatible assembly that includes the gasket and filter to complete the repair in one trip, avoid unnecessary downtime, and restore smooth, quiet operation to older motors.