Fuel Pump – Fits Johnson/Evinrude 20-140 HP Outboard (Replaces 438556)
Fuel Pump – Fits Johnson/Evinrude 20-140 HP Outboard (Replaces 438556) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Fuel Pump – Fits Johnson/Evinrude 20-140 HP Outboard (Replaces 438556)
Fuel Pump – Fits Johnson/Evinrude 20-140 HP Outboard (Replaces 438556) is backordered and will ship as soon as it is back in stock.
Product Details
This is a replacement Fuel Pump for Johnson/Evinrude 20–140 HP Outboard (Replaces 438556), fitting a wide range of 2-stroke models from 1968–1997. It is engineered to meet or exceed original equipment specifications, ensuring reliable fuel delivery for consistent engine performance across various horsepower ratings, including 9.9 HP, 20–60 HP, 85–90 HP, 100–115 HP, and 140 HP outboards.
This component serves as a direct interchange for Johnson/Evinrude part numbers 438556, 433387, and 777735, as well as aftermarket equivalents from Sierra (18-7352), Mallory (9-35352), and EMP (1399-07352).
- Installs via a standard flange mount.
- Constructed with a durable metal/aluminum housing.
- Includes a new fuel pump gasket for a complete installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Johnson/Evinrude | 438556 / 0438556 |
| Johnson/Evinrude | 433387 |
| Johnson/Evinrude | 777735 |
| Johnson/Evinrude | 432451 |
| Johnson/Evinrude | 398387 |
| Johnson/Evinrude | 398338 |
| Johnson/Evinrude | 395850 |
| Johnson/Evinrude | 382354 |
| Johnson/Evinrude | 395713 |
| Johnson/Evinrude | 388268 |
| Johnson/Evinrude | 395084 |
| Johnson/Evinrude | 394543 |
| Johnson/Evinrude | 385781 |
| Sierra | 18-7352 |
| Mallory | 9-35352 |
| EMP | 1399-07352 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This fuel pump is designed for a wide range of Johnson/Evinrude 2-stroke outboard motors produced between 1968 and 1997.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Johnson/Evinrude | Outboard | 9.9 | 2-Stroke | 1979 | 438556 | |
| Johnson/Evinrude | Outboard | 20 | 2-Stroke | 1985–1989 | 438556 | |
| Johnson/Evinrude | Outboard | 25 | 2-Stroke | 1976–1989 | 438556 | |
| Johnson/Evinrude | Outboard | 28 | 2-Stroke | 1985–1989 | 438556 | |
| Johnson/Evinrude | Outboard | 30 | 2-Stroke | 1984–1989 | 438556 | |
| Johnson/Evinrude | Outboard | 33 | 2-Stroke | 1968–1970 | 438556 | |
| Johnson/Evinrude | Outboard | 35 | 2-Stroke | 1976–1979, 1984, 1986–1989, 1991–1994 | 438556 | |
| Johnson/Evinrude | Outboard | 40 | 2-Stroke | 1968–1976, 1984–1994 | 438556 | |
| Johnson/Evinrude | Outboard | 45 | 2-Stroke | 1986–1994 | 438556 | |
| Johnson/Evinrude | Outboard | 48 | 2-Stroke | 1987–1994 | 438556 | |
| Johnson/Evinrude | Outboard | 50 | 2-Stroke | 1974–1975, 1979, 1984–1994 | 438556 | |
| Johnson/Evinrude | Outboard | 55 | 2-Stroke | 1976–1979, 1983–1994 | 438556 | |
| Johnson/Evinrude | Outboard | 60 | 2-Stroke | 1984–1985 | 438556 | |
| Johnson/Evinrude | Outboard | 85 | 2-Stroke | 1977–1980 | 438556 | |
| Johnson/Evinrude | Outboard | 88 | 2-Stroke | 1987–1990 | 438556 | Some sources list up to 1996 |
| Johnson/Evinrude | Outboard | 90 | 2-Stroke | 1981–1983, 1988–1990 | 438556 | |
| Johnson/Evinrude | Outboard | 100 | 2-Stroke | 1979–1980, 1988–1990, 1996–1997 | 438556 | |
| Johnson/Evinrude | Outboard | 110 | 2-Stroke | 1988–1989 | 438556 | |
| Johnson/Evinrude | Outboard | 112 | 2-Stroke | 1994–1996 | 438556 | Found in some sources |
| Johnson/Evinrude | Outboard | 115 | 2-Stroke | 1977–1983, 1990 | 438556 | |
| Johnson/Evinrude | Outboard | 140 | 2-Stroke | 1977–1983 | 438556 |
Technical Specs
- Product Type
- Mechanical Fuel Pump
- Installation
- Flange Mount
- Fuel Type
- Gasoline
- Connection
- Hose Barb
- Housing Material
- Metal/Aluminum
- Housing Color
- Silver/Metallic
- Weight
- 0.22 kg (7.8 oz)
- Fitting Type
- Barb
- Operating Principle
- Automatic operation
- Warranty
- Varies by retailer/manufacturer
What’s in the Box
- 1 x Fuel Pump (438556)
- 1 x Gasket for the fuel pump
Installation Notes
- Disconnect the negative battery terminal to prevent accidental starting.
- Carefully relieve any pressure in the fuel system. Place rags under the pump to catch any spilled fuel.
- Note the orientation of the fuel lines, then disconnect the inlet and outlet hoses from the old pump.
- Remove the mounting bolts securing the pump to the engine block.
- Remove the old fuel pump and discard the old gasket. Thoroughly clean the mounting surface on the engine, ensuring it is free of old gasket material and debris.
- Position the new gasket and fuel pump onto the engine block.
- Hand-tighten the mounting bolts, then torque them to the manufacturer's specified values in a crisscross pattern to ensure an even seal. Do not overtighten.
- Reconnect the fuel inlet and outlet hoses to the correct ports on the new pump and secure the clamps.
- Reconnect the battery terminal, prime the fuel system according to your engine's procedure, and check for any leaks before starting the engine.
Troubleshooting & FAQ
How do I know if this fuel pump fits my engine?
The best way to confirm fitment is to check your original part number against the list in our Part Number Matrix. You can also review the Engine & Model Compatibility table to find your specific HP and year. If you are still unsure, please contact us with your engine's model and serial number before purchasing.
What are common signs of a failing fuel pump?
Symptoms of a bad fuel pump include difficulty starting, engine sputtering at high speeds, loss of power, surging, or stalling. A visual inspection may also reveal cracks or leaks in the pump housing.
My engine appears in the list, but my model year is slightly different. Will it fit?
Sometimes manufacturers have mid-year changes or regional variations. The year ranges provided are based on the most accurate data available. If your model year falls just outside the listed range, contact us to verify compatibility before ordering. It is crucial to match the part number (438556) for a guaranteed fit.
How often should a mechanical fuel pump be replaced?
Mechanical fuel pumps do not have a fixed replacement interval and are typically replaced only when they fail. Lifespan depends on factors like fuel quality, ethanol content, and operating hours. Regular inspection during engine service is recommended.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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