Fuel Pump – Fits Johnson/Evinrude 25–140 HP (Replaces 438559, 433390, 398385)
Fuel Pump – Fits Johnson/Evinrude 25–140 HP (Replaces 438559, 433390, 398385) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Fuel Pump – Fits Johnson/Evinrude 25–140 HP (Replaces 438559, 43339...
Fuel Pump – Fits Johnson/Evinrude 25–140 HP (Replaces 438559, 433390, 398385) is backordered and will ship as soon as it is back in stock.
Product Details
This Fuel Pump – Fits Johnson/Evinrude 25–140 HP (Replaces 438559) is an aftermarket replacement designed for a wide range of Johnson and Evinrude outboard motors from 25 to 140 HP. It fits both Crossflow and Looper engines manufactured between 1976 and 2001, providing reliable fuel delivery for consistent engine performance.
This part is a direct interchange for Johnson/Evinrude part numbers 438559, 433390, 398385, 395712, 385784, 765591, and others listed in the matrix below. It serves as a comprehensive replacement for multiple superseded parts.
- Installation Type: External pulse style pump.
- Operating Mechanism: Uses engine pulse for operation via a mechanical diaphragm.
- Included Components: Kit includes the fuel pump, gasket, filter, and retaining clip.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Johnson/Evinrude | 438559 |
| Johnson/Evinrude | 0438559 |
| Johnson/Evinrude | 433390 |
| Johnson/Evinrude | 398385 |
| Johnson/Evinrude | 395712 |
| Johnson/Evinrude | 385784 |
| Johnson/Evinrude | 398678 |
| Johnson/Evinrude | 395718 |
| Johnson/Evinrude | 395107 |
| Johnson/Evinrude | 394716 |
| Johnson/Evinrude | 393648 |
| Johnson/Evinrude | 388555 |
| Johnson/Evinrude | 383765 |
| Johnson/Evinrude | 0383765 |
| Johnson/Evinrude | 382872 |
| Johnson/Evinrude | 382843 |
| Johnson/Evinrude | 381600 |
| Johnson/Evinrude | 765591 |
| Johnson/Evinrude | 438557 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Johnson/Evinrude V6 Crossflow engines, please note that two fuel pumps are required for proper operation.
| Brand | Model | Rated HP | Stroke | Years | Notes |
|---|---|---|---|---|---|
| Johnson/Evinrude | 2-cylinder | 6–8 | 2-Stroke | 1987 | |
| Johnson/Evinrude | 3-cylinder | 25–35 | 2-Stroke | 1976–2001 | |
| Johnson/Evinrude | V4 Crossflow | 50–65 | 2-Stroke | 1976–1994 | |
| Johnson/Evinrude | V4 Crossflow | 70–75 | 2-Stroke | 1986–1997 | |
| Johnson/Evinrude | V4 Crossflow | 85–88 | 2-Stroke | 1977–1996 | |
| Johnson/Evinrude | V4 Crossflow | 90 | 2-Stroke | 1984–1996 | 90-degree models only for 1995–1996 |
| Johnson/Evinrude | V4 Crossflow | 100 | 2-Stroke | 1985–1997 | |
| Johnson/Evinrude | V4 Crossflow | 105 | 2-Stroke | 1979–1980 | |
| Johnson/Evinrude | V4 Crossflow | 115 | 2-Stroke | 1984–2005 | 90-degree models only for 1995–1996 |
| Johnson/Evinrude | V4 Looper | 105–125 | 2-Stroke | 1995–2001 | |
| Johnson/Evinrude | V4 Looper | 135–140 | 2-Stroke | 1977–1983 | |
| Johnson/Evinrude | V6 Crossflow | 140–155 | 2-Stroke | 1978–1987 | V6 engine needs 2 fuel pumps |
| Johnson/Evinrude | V6 Crossflow | 175–185 | 2-Stroke | 1977–1983 | V6 engine needs 2 fuel pumps |
| Johnson/Evinrude | V6 Crossflow | 200–235 | 2-Stroke | 1977–1984 | V6 engine needs 2 fuel pumps |
Technical Specs
- Product Type
- Fuel Pump
- Installation
- External Pulse Style
- Fuel Type
- Gasoline/Petrol
- Connection
- 3-Port (Inlet, Outlet, Pulse)
- Housing Material
- Plastic/Metal
- Housing Color
- Black/Silver
- Weight
- 0.2 kg (0.44 lb)
- Fitting Type
- Hose Barb
- Other Technical Attributes
- Uses engine pulse for operation; mechanical diaphragm style pump
What’s in the Box
- 1 x Fuel Pump
- 1 x Gasket
- 1 x Fuel Filter
- 1 x Clip
Installation Notes
- Before you begin, disconnect the negative battery terminal for safety.
- Relieve any pressure in the fuel system according to the manufacturer's service manual.
- Use hose clamps to pinch off the fuel inlet, outlet, and pulse lines to prevent fuel spillage.
- Carefully disconnect the lines from the old fuel pump. Note their orientation.
- Unbolt and remove the old pump assembly from the engine block.
- Thoroughly clean the mounting surface, ensuring it is free of old gasket material and debris.
- Place the new gasket onto the engine block, followed by the new fuel pump.
- Secure the a pump with the mounting bolts, tightening them to the torque specified in your service manual.
- Reconnect the fuel and pulse lines to the correct ports on the new pump and secure them.
- Reconnect the battery terminal, prime the fuel system, and carefully inspect for any leaks before starting the engine.
Troubleshooting & FAQ
How do I confirm this pump fits my specific engine model?
Please review the Engine & Model Compatibility table on this page. Match your engine's brand, model, HP, and year range. Note that some V6 engines require two of these pumps.
Why do V6 Crossflow engines require two fuel pumps?
The Johnson/Evinrude V6 Crossflow engine design requires two separate fuel pumps to adequately supply fuel to both cylinder banks, ensuring balanced performance and preventing fuel starvation under load.
What are common symptoms of a failing fuel pump?
Signs of a faulty fuel pump include the engine sputtering at high speeds, loss of power, difficulty starting, or stalling, especially under load or when warm.
How does this pulse-style pump work?
This is a mechanical diaphragm pump. It uses the alternating positive and negative pressure (a "pulse") from the engine's crankcase to move the internal diaphragm, which in turn draws fuel in and pushes it out toward the carburetors.
Is this a complete kit? Is a gasket included?
Yes, this is a kit that includes the fuel pump itself, a new mounting gasket, a fuel filter, and a clip, as shown in the "What's in the Box" section.
What is the recommended maintenance for this fuel pump?
These pumps are not typically serviceable and should be replaced if they fail. To prolong its life, ensure your fuel tank is clean and regularly replace your engine's primary fuel filter to prevent debris from damaging the pump diaphragm.
Is this an official OEM part?
This listing is an aftermarket replacement (not OEM). It is built to OEM-level specifications with comparable materials and manufactured in an ISO 9002 facility, with batch inspections for quality and consistency.
How fast is shipping?
We ship worldwide quickly—typical transit is 5–15 days. Standard shipping is free for most destinations; expedited options appear at checkout where available.
What is the warranty and return policy?
This part is covered by a 1-year warranty against manufacturing defects under normal marine use. If you encounter an issue, please contact our support team with your order details. Returns are accepted within our standard window for unused items in their original condition. See our policy page or reach out for instructions.
Safety & Important Info
- Verify images and specifications against 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 quality control.
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