Fuel Pump – Fits Johnson/Evinrude 25-140 HP Outboards (Replaces 438559)
Fuel Pump – Fits Johnson/Evinrude 25-140 HP Outboards (Replaces 438559) is backordered and will ship as soon as it is back in stock.
Worry-free returns
Worry-free returns
Shop with confidence. If you’re not completely satisfied, eligible items may be returned within the return window, provided they are unused and in original packaging.
If the return is due to our error or a defective item, we’ll make it right.
Please contact us before returning any item.
Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
Tracking information will be provided once your order ships.
Fuel Pump – Fits Johnson/Evinrude 25-140 HP Outboards (Replaces 438...
Fuel Pump – Fits Johnson/Evinrude 25-140 HP Outboards (Replaces 438559) is backordered and will ship as soon as it is back in stock.
Product Details
This is an aftermarket replacement Fuel Pump – Fits Johnson/Evinrude 25-140 HP Outboards (Replaces 438559), designed for a wide range of 2-stroke and 4-stroke engines manufactured between 1968 and 2001. It is compatible with both Crossflow and Looper model series, ensuring broad application for many classic outboards.
This fuel pump serves as a direct interchange for numerous Johnson/Evinrude part numbers, including 438559, 433390, 398385, 395712, 385784, 398678, and others, making it a versatile service part for maintenance and repairs.
- Features an external pulse-style design for straightforward installation.
- Operates using the engine's natural pressure pulse via a mechanical diaphragm.
- Equipped with a standard 3-port connection for fuel inlet, outlet, and the pulse hose.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Johnson/Evinrude | 438559 |
| 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 | 382872 |
| Johnson/Evinrude | 382843 |
| Johnson/Evinrude | 381600 |
| Johnson/Evinrude | 765591 |
| Johnson/Evinrude | 5005462 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Johnson/Evinrude engines, please verify your model, horsepower rating, and year range to ensure proper fitment. Note any specific conditions, such as "90-degree models only," in the 'Notes' column.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Johnson/Evinrude | 2-cylinder | 6-8 | 2-Stroke | 1987 | 438559 | |
| Johnson/Evinrude | 3-cylinder | 25-35 | 2-Stroke | 1996–2001 | 438559 | |
| Johnson/Evinrude | V4 Crossflow | 90 | 2-Stroke | 1984–1994 | 438559 | |
| Johnson/Evinrude | V4 Crossflow | 90 | 2-Stroke | 1995–1996 | 438559 | 90-degree models only |
| Johnson/Evinrude | V4 Crossflow | 100 | 2-Stroke | 1985–1997 | 438559 | |
| Johnson/Evinrude | V4 Crossflow | 115 | 2-Stroke | 1984–1994 | 438559 | |
| Johnson/Evinrude | V4 Crossflow | 115 | 2-Stroke | 1995–1996, 2004–2005 | 438559 | 90-degree models only for 1995-1996 |
| Johnson/Evinrude | V4 Looper | 105-125 | 2-Stroke | 1995–2001 | 438559 | |
| Johnson/Evinrude | V6 Crossflow | 150-155 | 2-Stroke | 1978–1987 | 438559 | |
| Johnson/Evinrude | V6 Crossflow | 175-185 | 2-Stroke | 1977–1983 | 438559 | |
| Johnson/Evinrude | V6 Crossflow | 200-235 | 2-Stroke | 1977–1984 | 438559 |
Technical Specs
- Product Type
- Fuel Pump
- Installation
- External Pulse Style
- Fuel Type
- Gasoline/Petrol
- Connection
- 3-Port (Inlet, Outlet, Pulse)
- Housing Material
- Metal
- 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 Assembly (438559)
- 1 x Mounting Gasket (0303615) - included with some packages
Installation Notes
- Disconnect the negative battery terminal to prevent accidental starting.
- Place rags or a suitable container under the fuel pump to catch any spilled fuel.
- Carefully clamp the fuel lines to prevent leakage, then disconnect the inlet, outlet, and pulse hoses from the old pump.
- Remove the mounting bolts securing the old fuel pump to the engine block and take off the pump.
- Clean the mounting surface and remove any old gasket material.
- Position the new gasket and mount the new fuel pump, tightening the bolts to the manufacturer-specified torque.
- Reconnect the inlet, outlet, and pulse hoses, ensuring all clamps are secure.
- Reconnect the battery, prime the fuel system according to your engine's manual, and check for leaks before starting the engine.
Troubleshooting & FAQ
How can I confirm this pump fits my specific engine model?
First, check if your existing pump's part number is listed in our Part Number Matrix. Second, verify your engine's model, horsepower, and year against the detailed Engine & Model Compatibility table. If your model appears but has different specifications, do not purchase without contacting us.
What are the common signs of a failing fuel pump?
Symptoms of a bad fuel pump include the engine bogging down at high RPM, difficulty starting, engine sputtering or stalling, and a noticeable loss of power. A simple pressure test can often diagnose a weak pump.
Can this pump replace a VRO pump?
Yes, this fuel pump is commonly used to bypass or replace the fuel-only side of a VRO (Variable Ratio Oiling) system. When doing so, you must disable the oiling side and switch to pre-mixing oil and gas in your fuel tank. This is a common modification, but professional guidance is recommended.
What is the purpose of the third (pulse) port?
The pulse port connects to the engine crankcase. The changing pressure inside the crankcase as the piston moves up and down creates a pulse, which actuates the diaphragm inside the fuel pump to draw fuel from the tank and send it to the carburetor.
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.
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
