Fuel Pump Assembly – Fits Johnson/Evinrude 20-140HP (Replaces 438556, 433387, 18-7352)
Fuel Pump Assembly – Fits Johnson/Evinrude 20-140HP (Replaces 438556, 433387, 18-7352) 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 Assembly – Fits Johnson/Evinrude 20-140HP (Replaces 43855...
Fuel Pump Assembly – Fits Johnson/Evinrude 20-140HP (Replaces 438556, 433387, 18-7352) is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket Fuel Pump Assembly – Fits Johnson/Evinrude 20-140HP Outboards (Replaces 438556, 433387, 18-7352) is designed for a wide range of Johnson/Evinrude 2-Stroke outboard engines from 20HP to 140HP, covering models from 1968 to 1996. It is engineered for use with standard, non-VRO (Variable Ratio Oiling) fuel systems only and is not compatible with oil injection systems.
This unit serves as a direct interchange for Johnson/Evinrude part numbers 438556, 433387, 398387, 388268, 385781, 394543, 382354, 395713, 432451, and Sierra 18-7352, ensuring broad cross-reference compatibility.
- Installs as a direct bolt-on replacement for the original pump.
- Constructed with a durable aluminum body and high-grade rubber diaphragm.
- Package includes the fuel pump, gasket, and mounting hardware for a complete installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Johnson/Evinrude | 438556 |
| Johnson/Evinrude | 433387 |
| Johnson/Evinrude | 398387 |
| Johnson/Evinrude | 388268 |
| Johnson/Evinrude | 385781 |
| Johnson/Evinrude | 394543 |
| Johnson/Evinrude | 382354 |
| Johnson/Evinrude | 395713 |
| Johnson/Evinrude | 432451 |
| Sierra | 18-7352 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This fuel pump is designed for a wide range of non-VRO Johnson/Evinrude 2-stroke outboard engines produced between 1968 and 1996.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Johnson/Evinrude | Multiple | 20 | 2-Stroke | 1985–1989 | 438556, 433387 | |
| Johnson/Evinrude | Multiple | 25 | 2-Stroke | 1976–1988 | 438556, 433387 | |
| Johnson/Evinrude | Multiple | 28 | 2-Stroke | 1985–1989 | 438556, 433387 | |
| Johnson/Evinrude | Multiple | 30 | 2-Stroke | 1985–1989 | 438556, 433387 | |
| Johnson/Evinrude | Multiple | 33 | 2-Stroke | 1968–1970 | 438556, 433387 | |
| Johnson/Evinrude | Multiple | 35 | 2-Stroke | 1976–1989 | 438556, 433387 | |
| Johnson/Evinrude | Multiple | 40 | 2-Stroke | 1968–1994 | 438556, 433387 | |
| Johnson/Evinrude | Multiple | 45 | 2-Stroke | 1985–1994 | 438556, 433387 | |
| Johnson/Evinrude | Multiple | 48 | 2-Stroke | 1985–1994 | 438556, 433387 | |
| Johnson/Evinrude | Multiple | 50 | 2-Stroke | 1974–1994 | 438556, 433387 | |
| Johnson/Evinrude | Multiple | 55 | 2-Stroke | 1976–1979 | 438556, 433387 | |
| Johnson/Evinrude | Multiple | 55 | 2-Stroke | 1985–1990 | 438556, 433387 | |
| Johnson/Evinrude | Multiple | 60 | 2-Stroke | 1980–1985 | 438556, 433387 | |
| Johnson/Evinrude | Multiple | 85 | 2-Stroke | 1977–1980 | 438556, 433387 | |
| Johnson/Evinrude | Multiple | 88 | 2-Stroke | 1987–1996 | 438556, 433387 | |
| Johnson/Evinrude | Multiple | 90 | 2-Stroke | 1981–1983 | 438556, 433387 | |
| Johnson/Evinrude | Multiple | 100 | 2-Stroke | 1979–1980 | 438556, 433387 | |
| Johnson/Evinrude | Multiple | 112 | 2-Stroke | 1994–1996 | 438556, 433387 | |
| Johnson/Evinrude | Multiple | 115 | 2-Stroke | 1977–1983 | 438556, 433387 | |
| Johnson/Evinrude | Multiple | 140 | 2-Stroke | 1977–1983 | 438556, 433387 |
Technical Specs
- Product Type
- Mechanical Fuel Pump Assembly
- Installation
- Direct bolt-on replacement
- Fuel Type
- Gasoline (pre-mixed with oil for 2-stroke engines)
- Connection
- 2-3 port design with nipple/hose connections
- Housing Material
- Aluminum body with rubber diaphragm
- Housing Color
- Black/Silver
- Dimensions
- Approx. 102 × 102 × 51 mm (4 × 4 × 2 in)
- Weight
- Approx. 0.13 kg (0.29 lbs)
- Fitting Type
- Nipple/hose barb connections
- Warranty
- 1-3 months (varies by seller)
- Other Attributes
- Non-VRO style, designed for non-oil injection systems
What’s in the Box
- 1 x Fuel Pump Assembly (Replaces 438556/433387)
- 1 x Gasket (Replaces 0303615)
- 1 x Mounting Hardware Kit (Note: kit contents may vary by vendor)
Installation Notes
- Disconnect the negative battery terminal to prevent electrical hazards.
- Carefully relieve any pressure from the fuel system. Place rags around fittings to catch fuel spillage.
- Clearly label and disconnect the inlet and outlet fuel lines from the pump. Plug the lines to prevent contamination or leaks.
- Remove the mounting bolts securing the old fuel pump to the engine block.
- Gently remove the old pump and any gasket remnants. Thoroughly clean the mounting surface on the engine block.
- Place the new gasket onto the engine block, aligning it with the mounting holes.
- Install the new fuel pump, ensuring it is seated correctly.
- Secure the pump with the provided mounting hardware, tightening bolts evenly to the manufacturer's recommended torque specification.
- Reconnect the fuel lines to the correct ports on the new pump and secure the clamps.
- Reconnect the battery terminal, prime the fuel system, and start the engine. Check thoroughly for any fuel leaks at all connections.
Troubleshooting & FAQ
How do I know if my fuel pump is failing?
Common symptoms of a failing mechanical fuel pump include engine sputtering at high speeds, loss of power, difficulty starting, or the engine dying unexpectedly. You may also find fuel leaking from the pump housing itself.
Is this fuel pump compatible with VRO (oil injection) systems?
No, this is a non-VRO style pump. It is designed specifically for engines that use a pre-mixed fuel/oil blend and is not compatible with any Johnson/Evinrude VRO (Variable Ratio Oiling) or other oil-injection systems.
What is the difference between a 2-port and 3-port pump?
This replacement pump may have 2 or 3 ports. The third port is typically a pulse port that connects to the crankcase. If your original pump has 2 ports, the pulse is drawn internally, and the third port on the replacement can be safely capped or ignored.
Does this pump include a new gasket?
Yes, a new mounting gasket is included in the package to ensure a proper seal against the engine block. Hardware kits are also typically included, though contents can vary by vendor.
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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