Fuel Pump Assembly – Fits Johnson/Evinrude 20-140HP (Replaces 438556, 433387)

Fuel Pump Assembly – Fits Johnson/Evinrude 20-140HP (Replaces 438556, 433387)

This mechanical fuel pump is a direct-fit replacement for Johnson and Evinrude 2-stroke outboard engines ranging from 20HP to 140HP, manufactured between 1968 and 1996. It is engineered for reliable performance in standard, non-oil-injected fuel systems.

This assembly replaces multiple Johnson/Evinrude and Sierra part numbers, including 438556, 433387, 398387, 388268, 385781, 394543, 382354, 395713, 432451, and Sierra 18-7352.

• Installation Type: Direct bolt-on replacement for easy installation.
• Fuel Compatibility: Designed for gasoline pre-mixed with oil for 2-stroke engines.
• Important Note: This pump is for non-VRO (Variable Ratio Oiling) systems only.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Johnson/Evinrude owners, here’s a guide to help you identify your engine’s serial/model: Johnson/Evinrude Serial Number Guide.

Technical Specifications

Package Contents

• 1 x Fuel Pump Assembly (438556/433387)
• 1 x Gasket (0303615)
• 1 x Mounting Hardware Kit

Installation Guide

1. Ensure the engine is off and cool, and disconnect the battery as a safety precaution.
2. Place a clean rag or container beneath the existing fuel pump to catch any fuel spillage.
3. Carefully disconnect the inlet and outlet fuel lines from the old pump, noting their orientation.
4. Remove the mounting bolts that secure the old fuel pump to the engine block.
5. Thoroughly clean the mounting surface, ensuring all old gasket material is removed.
6. Position the new gasket correctly on the engine block's mounting surface.
7. Install the new fuel pump assembly, ensuring it is flush against the gasket, and tighten the mounting bolts evenly.
8. Reconnect the fuel lines to the correct nipples on the new pump. Secure any clamps.
9. Reconnect the battery.
10. Prime the fuel system by squeezing the primer bulb until firm.
11. Start the engine and carefully inspect the pump and connections for any signs of leaks.

Troubleshooting & FAQ

Q: How do I confirm this fuel pump fits my Johnson/Evinrude engine?

A: This pump fits most Johnson/Evinrude 2-stroke outboards from 20HP to 140HP made between 1968 and 1996. To be certain, please check the "Compatible Engine Models" table and cross-reference your specific model and year. Also, verify that your current pump uses one of the OEM part numbers listed, such as 438556 or 433387.

Q: Is this pump compatible with a VRO (Variable Ratio Oiling) system?

A: No. This is a non-VRO style fuel pump. It is designed only for standard fuel systems where oil is pre-mixed with gasoline. Do not install this on an engine with an active oil injection system.

Q: What are common signs that my old fuel pump needs replacement?

A: Signs of a failing fuel pump include the engine having trouble starting, sputtering or stalling at various speeds, bogging down under acceleration, or a complete loss of power. A visual inspection may also reveal fuel leaks from the pump body or connections.

Q: OEM vs. Aftermarket?

A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?

A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?

A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.