Fuel Pump for Johnson/Evinrude 25–55 HP 2-Stroke Outboards, 1976–1989 Non-VRO – Replaces 438556
Fuel Pump for Johnson/Evinrude 25–55 HP 2-Stroke Outboards, 1976–1989 Non-VRO – Replaces 438556 is backordered and will ship as soon as it is back in stock.
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Fuel Pump for Johnson/Evinrude 25–55 HP 2-Stroke Outboards, 1976–19...
Fuel Pump for Johnson/Evinrude 25–55 HP 2-Stroke Outboards, 1976–1989 Non-VRO – Replaces 438556 is backordered and will ship as soon as it is back in stock.
Product Details
This is an aftermarket replacement fuel pump for selected Johnson/Evinrude 25–55 HP 2-stroke outboards from 1976–1989 without VRO. It replaces the OMC/Johnson/Evinrude fuel pump reference 438556 and is intended for applications using the corresponding non-VRO fuel-pump configuration.
Fitment depends on the exact engine model, production year, fuel-system configuration, and original part number. Check the application information and reference numbers below before ordering.
- Replacement mechanical fuel pump for the listed Johnson/Evinrude applications.
- Application range: 25–55 HP, 1976–1989, non-VRO models.
- Designed as a replacement for the original flanged fuel-pump installation where the listed reference applies.
- Aftermarket component; not an OEM-manufactured part.
Part Number Matrix
The following references are listed as replacement or interchange numbers for this fuel-pump application. They are provided for identification and fitment checking only.
| Brand | Part Number |
|---|---|
| OMC / Johnson / Evinrude | 438556 |
| OMC / Johnson / Evinrude | 388268 |
| OMC / Johnson / Evinrude | 385781 |
| OMC / Johnson / Evinrude | 394543 |
| OMC / Johnson / Evinrude | 382354 |
| OMC / Johnson / Evinrude | 395713 |
| OMC / Johnson / Evinrude | 398338 |
| OMC / Johnson / Evinrude | 432451 |
| OMC / Johnson / Evinrude | 398387 |
| OMC / Johnson / Evinrude | 433387 |
| Sierra | 18-7352 |
Engine & Model Compatibility
Catalog application data identifies this fuel-pump reference for the following combined conditions:
| Brand | Rated HP | Stroke | Years | Fuel-System Condition | Reference |
|---|---|---|---|---|---|
| Johnson/Evinrude | 25–55 HP | 2-Stroke | 1976–1989 | Non-VRO | 438556 |
Do not use this listing as confirmation for VRO models, four-stroke engines, engines outside the stated horsepower and year range, or applications using a different pump configuration. Match the original pump and part number before purchase.
Technical Specs
- Product Type
- Replacement mechanical fuel pump
- Application
- Johnson/Evinrude 25–55 HP 2-stroke outboards
- Application Years
- 1976–1989
- Fuel-System Configuration
- Non-VRO
- Mounting
- Flanged fuel-pump mount
- Fuel
- Gasoline
- OEM Replacement Reference
- 438556
- Aftermarket Reference
- Sierra 18-7352
- Product Status
- Aftermarket replacement, not OEM
What’s in the Box
- 1 × Replacement fuel pump
A gasket or rebuild kit is not identified as included with this fuel-pump listing. Reuse only serviceable mounting hardware and obtain any required gasket or kit separately according to the engine’s service requirements.
Installation Notes
- Verify the engine model, year, horsepower, non-VRO configuration, and original pump reference before beginning work.
- Work in a well-ventilated area away from flames, sparks, and other ignition sources. Allow the engine to cool.
- Disconnect the battery where applicable and relieve fuel-system pressure according to the engine manufacturer’s service procedure.
- Mark the fuel-line locations and disconnect the hoses from the existing pump. Use suitable materials to catch spilled fuel.
- Remove the pump mounting fasteners and the old pump. Clean the mounting surface without allowing debris to enter the engine or fuel system.
- Install the replacement pump using the correct gasket or sealing arrangement for the specific engine. A gasket is not confirmed as included with this listing.
- Reconnect the fuel lines in their original positions and secure all clamps or fittings.
- Tighten fasteners to the engine manufacturer’s specification. Do not overtighten or distort the pump or mounting surface.
- Prime the fuel system using the engine’s normal procedure, inspect carefully for leaks, and verify proper operation before returning the boat to service.
Troubleshooting & FAQ
How do I confirm that this fuel pump fits my engine?
Confirm all fitment conditions together: Johnson/Evinrude brand, 25–55 HP rating, 2-stroke engine, 1976–1989 model year, non-VRO fuel system, and a matching reference such as 438556 or Sierra 18-7352. If any condition differs, compare the original pump and consult an appropriate engine parts catalog before ordering.
Does this pump fit every Johnson/Evinrude 20–140 HP engine?
No. The broad 20–140 HP claim is not retained. The documented application for this listing is 25–55 HP 2-stroke Johnson/Evinrude outboards from 1976–1989 without VRO. Other horsepower ranges and configurations may use different fuel pumps.
Does the package include a fuel-pump gasket?
A gasket is not confirmed as included. This listing is for the replacement fuel pump only; verify and source the correct gasket or service kit separately when required by the engine installation.
What are common signs of a failing mechanical fuel pump?
Possible symptoms include hard starting, fuel starvation at higher speed, loss of power, surging, stalling, or visible fuel leakage. Diagnose the complete fuel system before replacing the pump.
Is this an OEM fuel pump?
No. This is an aftermarket replacement intended to replace the listed OEM reference. Confirm dimensions, hose routing, mounting, and the original part number before installation.
How often should the pump be replaced?
Mechanical fuel pumps do not generally have a universal fixed replacement interval. Inspect the pump during routine service and replace it when testing or visible condition indicates a problem.
Safety & Important Information
- Fuel is flammable. Keep the work area ventilated and eliminate ignition sources before servicing the fuel system.
- Never rely on horsepower alone to determine fitment. Match the year, stroke, fuel-system configuration, model information, and original part number.
- Do not install this pump on VRO, four-stroke, or other applications outside the stated range without verified application data.
- Professional installation is recommended when the correct fuel-system procedure or sealing arrangement is uncertain.
- This is an aftermarket replacement and is not manufactured by Johnson, Evinrude, OMC, or Sierra.
About Sea Sierra
- Marine Replacement Parts — We provide aftermarket components for marine repair and maintenance applications.
- Fitment-Focused Listings — Use the stated application conditions and reference numbers to help match the replacement part to your engine.
- Support Before Installation — When fitment is uncertain, have the complete engine model and serial information available before ordering.
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