Fuel Pump Assembly – Fits Johnson/Evinrude 20-140HP (Replaces 438556, 433387)
Fuel Pump Assembly – Fits Johnson/Evinrude 20-140HP (Replaces 438556, 433387) 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 Assembly – Fits Johnson/Evinrude 20-140HP (Replaces 43855...
Fuel Pump Assembly – Fits Johnson/Evinrude 20-140HP (Replaces 438556, 433387) is backordered and will ship as soon as it is back in stock.
Product Details
This is a high-quality aftermarket Fuel Pump Assembly – Fits Johnson/Evinrude 20-140HP (Replaces 438556, 433387). It is designed as a direct replacement for Johnson and Evinrude 2-stroke outboard engines from 20HP to 140HP manufactured between 1968 and 1996. This pump is compatible with standard, pre-mixed fuel systems and is not suitable for VRO (Variable Ratio Oiling) oil injection models.
It directly interchanges with Johnson/Evinrude part numbers 438556, 433387, 398387, 388268, 385781, 394543, 382354, 395713, 432451, and Sierra Marine 18-7352.
- Easy bolt-on installation with no modifications required.
- Engineered for 2-stroke outboard engines using pre-mixed gasoline and oil.
- Includes 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 Marine | 18-7352 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This fuel pump is designed exclusively for the Johnson and Evinrude outboard models listed.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. |
|---|---|---|---|---|---|
| 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 | 1976–1990 | 438556, 433387 |
| Johnson/Evinrude | Multiple | 60 | 2-Stroke | 1980–1985 | 438556, 433387 |
| Johnson/Evinrude | Multiple | 85-88 | 2-Stroke | 1977–1996 | 438556, 433387 |
| Johnson/Evinrude | Multiple | 90-115 | 2-Stroke | 1981–1983 | 438556, 433387 |
| Johnson/Evinrude | Multiple | 100-140 | 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
- 3 Nipple/Port Design
- Housing Color
- Black
- Weight
- Approximately 0.13 kg (0.29 lbs)
- Fitting Type
- Nipple/hose connections
- Warranty
- 3 months (varies by seller)
- Other Technical Attributes
- Non-VRO style, designed for non-oil injection systems
What’s in the Box
- 1 x Fuel Pump Assembly (438556/433387)
- 1 x Gasket (0303615)
- 1 x Mounting Hardware Kit
Installation Notes
- Ensure the engine is off and cool. Disconnect the battery and relieve any pressure in the fuel system.
- Place a rag or container under the old fuel pump to catch any spilled fuel.
- Carefully disconnect the fuel lines from the pump, noting their positions.
- Remove the mounting bolts securing the old pump to the engine block.
- Clean the mounting surface and remove any old gasket material.
- Position the new gasket and fuel pump, then tighten the mounting bolts to the manufacturer's specified torque.
- Reconnect the fuel lines to the correct ports on the new pump.
- Reconnect the battery, prime the fuel system, and check for any leaks before starting the engine.
Troubleshooting & FAQ
Will this fuel pump fit my engine if it has VRO?
No, this fuel pump is specifically designed for Johnson and Evinrude engines that do not have a VRO (Variable Ratio Oiling) system. It is for standard, pre-mixed fuel systems only.
What are the signs of a failing fuel pump?
Common symptoms of a failing fuel pump include the engine sputtering or bogging down at high speeds, loss of power, difficulty starting, or the engine stalling and not restarting.
Is the gasket included with this pump?
Yes, a new mounting gasket is included in the package to ensure a proper seal during installation.
Why does this pump have three hose connections (nipples)?
The three connections are for fuel in, fuel out to the carburetor(s), and a pulse line from the engine crankcase. The crankcase pressure pulses operate the pump's internal diaphragm.
How often should this fuel pump be replaced?
There is no specific replacement interval for mechanical fuel pumps. They should be inspected regularly and replaced if they show signs of leaking, physical damage, or are diagnosed as the cause of fuel delivery problems.
Can I use this pump with modern ethanol-blended fuels?
This pump is designed to be compatible with standard marine gasoline, including fuels containing up to 10% ethanol (E10). However, prolonged use of higher ethanol concentrations may accelerate wear.
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.
