JLM MARINE 438559 Outboard Fuel Pump for Johnson Evinrude

The JLM MARINE 438559 outboard fuel pump is a direct-replacement fuel pump and gasket kit engineered to restore reliable fuel delivery for many Johnson and Evinrude 25–140 HP outboard engines.

If your outboard is experiencing inconsistent fueling, hard starting, or poor throttle response, a worn or failing fuel pump is often the culprit. This JLM MARINE 438559 unit is offered as a universal-fit replacement for dozens of older Johnson and Evinrude part numbers and covers a wide range of cylinder counts and horsepower ratings from small 2-cylinder motors up to larger V6 engines. The kit ships with the pump hardware and a purpose-made gasket so you can complete the swap with minimal downtime and no custom sealant work.

Which engines and part numbers will this pump replace?

This pump is compatible with many Johnson and Evinrude outboard models produced across multiple years. It lists direct cross-references to legacy OEM numbers, which helps when restoring older boats or matching parts for repairs.

• Covers Johnson/Evinrude part numbers such as 438559, 388555, 433387, 395718 and many more.
• Also cross-references Sierra part number 18-7207 for broader sourcing options.
• Fits motors from 6hp up to 235hp across 2-, 3-, 4- and V6-cylinder configurations.
• Applicable model years include late 1960s through the early 2000s for affected engine families.

How difficult is the installation and what’s included?

The JLM MARINE pump kit is supplied with the pump body, mounting hardware and a shaped gasket to help make installation straightforward. Both seasoned mechanics and competent DIYers can replace the unit using basic hand tools and the included instructions.

• Complete kit includes the pump, gasket and necessary fasteners for direct replacement.
• Clear instructions reduce the need for additional parts or sealants.
• Typical installation requires standard tools and basic mechanical knowledge.
• Designed to fit existing mounting points to avoid modifications.

What performance improvements can I expect after replacing the pump?

Replacing a failing fuel pump stabilizes fuel pressure and delivery, which can translate into crisper starts, smoother idle and more consistent throttle response. While this kit does not change engine power, it helps the engine run as intended by restoring proper fuel flow.

• More consistent fuel delivery under varying RPMs and loads.
• Reduced hesitation, stalling and uneven idling related to fuel starvation.
• Helps maintain efficient combustion and longer component life by preventing fuel starvation events.
• Works with existing carburation or fuel-injection systems for the covered models.

Does this pump fit both small and large outboards in the same family?

Yes — the design covers a spectrum of small 2-cylinder units up to larger V4 and V6 engines found in mid- and high-horsepower outboards. Confirm compatibility by checking the cross-reference list of OEM part numbers and your engine’s model/year before purchasing.

• Suitable for 2-cylinder 6–8hp up to V6 150–235hp engines where the OEM part numbers match.
• Supports models manufactured across several decades—verify year and engine code.
• Ideal for both routine maintenance and restoration projects on older boats.

Who is this for: Boat owners, marine technicians and restoration enthusiasts with Johnson or Evinrude outboards who need an affordable, direct-replacement fuel pump and gasket kit. This JLM MARINE 438559 option is particularly useful if you’re servicing older engines with legacy part numbers, want a straightforward install, and need to restore consistent fuel delivery without extensive modifications.