Fuel Pump – Fits Johnson/Evinrude 20-30 HP (Replaces 438555, 433386)

Fuel Pump Assembly – Fits Johnson/Evinrude 20-30 HP (Replaces 438555, 433386)

This fuel pump assembly is engineered to fit Johnson/Evinrude 2-stroke outboard engines with 18-35 HP manufactured between 1990 and 2005. It serves as a direct, reliable replacement for your original fuel pump, restoring proper fuel delivery to your marine engine.

This component is a direct replacement for OEM fuel pump models 438555 and 433386, ensuring precise fit and function.

• Installation: Direct bolt-on replacement for a straightforward installation.
• Compatibility: Designed for gasoline with an oil mix in 2-stroke applications.
• Complete Kit: Includes one fuel pump, one mounting gasket, and three cable ties for a full replacement.

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 (Replaces 438555/433386)
• 1 x Mounting Gasket (Replaces 303615/0303615)
• 3 x Cable Ties (Replaces 320107/0320107)

Installation Guide

1. Safety First: Disconnect the battery and ensure the engine compartment is well-ventilated.
2. Relieve Fuel Pressure: Carefully relieve any pressure from the fuel system according to your engine's service manual.
3. Clamp Fuel Lines: Use fuel line clamps to pinch off the fuel inlet, outlet, and vacuum pulse lines to prevent fuel spillage.
4. Disconnect Lines: Loosen the hose clamps and disconnect the fuel and vacuum lines from the old pump. Note their positions.
5. Remove Old Pump: Unbolt and remove the old fuel pump and gasket from the engine block.
6. Clean Surface: Thoroughly clean the mounting surface on the engine, ensuring it is free of old gasket material and debris.
7. Install New Pump: Place the new gasket, then install the new fuel pump. Hand-tighten the mounting bolts evenly.
8. Reconnect Lines: Reconnect the fuel and vacuum lines to their correct ports on the new pump and secure the hose clamps. Remove the fuel line clamps.
9. Final Checks: Reconnect the battery. Prime the fuel system using the primer bulb until firm.
10. Test for Leaks: Start the engine and carefully inspect the pump and all connections for any signs of fuel leaks.

Troubleshooting & FAQ

How do I confirm this fits my engine?

The best way is to check the part number on your original fuel pump. If it matches 438555 or 433386, this is the correct replacement. You can also verify fitment by checking your engine's HP and year against the compatibility chart.

What are the signs of a failing fuel pump?

Common symptoms include the engine bogging down at high speeds, difficulty starting, stalling, or a noticeable loss of power, as the engine is not receiving enough fuel.

Why does this pump have three connections?

This is a vacuum-operated fuel pump. The three ports are for fuel in (from the tank), fuel out (to the carburetor), and a vacuum pulse line from the crankcase, which powers the pump's diaphragm.

OEM vs. Aftermarket?

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.

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

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.

What is your warranty and return policy?

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.