SeaSierra Outboard Fuel Pump for Johnson & Evinrude 20-140 HP — Direct-Fit Replacement with Gasket

SeaSierra 438556 is a direct-fit replacement fuel pump engineered for Johnson and Evinrude outboards from 20 to 140 horsepower, supplied with the matching gasket for a complete swap.

This SeaSierra replacement fuel pump restores proper fuel delivery in compatible Johnson and Evinrude outboard engines without needing extensive modification. It is manufactured to match OEM form, fit and function for a wide range of two-stroke and four-stroke outboards so you can replace a worn or leaking pump quickly. Before ordering, verify your motor’s model and part cross-reference to ensure compatibility.

Which Johnson and Evinrude engines will this pump fit?

The SeaSierra 438556 is designed to fit many common Johnson and Evinrude outboards spanning 20HP through 140HP. It covers multiple original part numbers, so it works as a cross-replacement for several discontinued or superseded OEM items.

• Compatible with 20, 25, 28, 30, 33, 35, 40, 45, 48, 50, 55, 60, 85, 88, 90, 100, 110, 115 and 140 HP models.
• Replaces OEM numbers such as 438556, 433387, 777735, 432451 and related Johnson/Evinrude codes.
• Also cross-references Mallory 9-35352, EMP 1399-07352 and Sierra 18-7352 for broad fitment.
• Confirm your engine serial/model to avoid ordering mistakes.

How does installation and compatibility work for a quick replacement?

Installation follows the same mounting pattern as the original factory pump, so in most cases it bolts into the existing location and uses the supplied gasket. Basic hand tools and a short amount of mechanical experience are usually enough to complete the swap.

• Ships with a pre-cut gasket to match the pump flange and sealing surface.
• Designed to reuse original mounting screws and fuel hose connections wherever possible.
• Simple swap in the field or garage—no special adapters required for compatible engines.
• Torque to manufacturer specs and check for leaks before operation.

What are the build and quality characteristics to expect?

SeaSierra manufactures this pump to meet OEM quality tolerances so it performs like an original unit. Materials and sealing points are chosen to resist fuel exposure and normal marine vibrations for dependable service life when installed correctly.

• Constructed to match factory dimensions and mounting locations.
• Seals and housing engineered for common marine fuel types and conditions.
• Inspected to ensure proper diaphragm and valve function prior to shipping.
• Sold as an aftermarket replacement—follow regular maintenance schedules.

What comes in the package and how should I verify fitment?

Your order includes the SeaSierra fuel pump and the matching gasket so you have the essential parts for replacement out of the box. Double-check the part numbers and your engine model against the cross-reference list to ensure you’re ordering the correct pump for your motor.

• Package contents: SeaSierra 438556 fuel pump and one gasket.
• Cross-reference list includes multiple OEM and aftermarket numbers—compare to your old part.
• If in doubt, record your engine model and serial and consult a dealer or repair manual.
• Keep old pump for comparison and return authorization if necessary.

Who is this for: Boaters, marine mechanics and DIY enthusiasts who need a reliable, OEM-form replacement fuel pump for Johnson and Evinrude outboards from 20 to 140 horsepower. This part is ideal for routine repairs, refit projects, or emergency swaps on vessels that use the listed part numbers. It’s not a universal pump—confirm compatibility with your engine data before purchase.