OEM Fuel Pump Assembly 438556 for OMC, Johnson and Evinrude outboards,
A properly functioning fuel pump is essential for reliable starting, smooth acceleration, and consistent engine performance. As fuel pumps age, diaphragms and internal components can wear, harden, or become damaged from fuel exposure and repeated use. When this happens, fuel delivery can become inconsistent, leading to performance issues and reliability concerns.
Replacing a worn fuel pump can help restore proper fuel flow and eliminate many common fuel-related engine problems.
At Liquid Revolutions, we’ve learned that many drivability issues are often traced back to fuel system components. A dependable fuel pump is critical for both recreational and high-performance applications, ensuring the engine receives the fuel it needs when it needs it.
Key Features & Benefits
- Reliable Fuel Delivery – Provides consistent fuel flow to the carburetors
- Supports Smooth Engine Operation – Helps maintain performance throughout the RPM range
- Improves Starting Performance – Ensures adequate fuel supply during startup
- OEM Replacement – Compatible with many OMC, Johnson and Evinrude outboards
- Durable Construction – Built to withstand marine operating conditions
- Ideal for Maintenance & Repairs – Great for restoring fuel system reliability
Common Symptoms of a Failing Fuel Pump
- Hard starting
- Engine hesitation
- Loss of power at higher RPM
- Fuel starvation
- Rough running
- Inconsistent throttle response
- Engine stalling under load
Why it Matters
Your fuel pump is responsible for supplying the correct amount of fuel to the engine under all operating conditions. When fuel delivery is restricted or inconsistent, performance suffers and engine reliability can be compromised.
A properly functioning fuel pump helps:
- Maintain consistent fuel flow
- Improve throttle response
- Support peak engine performance
- Reduce fuel-related drivability issues
- Improve overall reliability
Whether you’re repairing a fuel delivery issue, restoring an older outboard, or performing preventative maintenance, the OEM Parts provides the reliable fuel flow needed to keep your OMC, Johnson or Evinrude outboard running strong and performing its best.
Replaces: 0385781, 0394543, 0395084, 0394543, 0388268, 0395713. 0382354. 0398338, 0395850, 0432451, 0398387, 0777735, 0433387,
