The OEM Fuel Pump Cap Gasket 338879 is a critical sealing component designed to create a leak-free connection between the fuel pump cap and fuel pump body. Proper sealing is essential for maintaining fuel pump efficiency, preventing fuel leaks, and ensuring consistent fuel delivery to the engine.
Over time, fuel pump gaskets can become compressed, brittle, damaged, or deteriorated due to fuel exposure, heat, and repeated service. A worn gasket can allow fuel leaks, air leaks, or reduced fuel pump efficiency, potentially leading to hard starting, poor performance, and fuel delivery issues.
Replacing the fuel pump cap gasket whenever the fuel pump is serviced or rebuilt helps ensure proper sealing and reliable operation. This gasket is designed as a direct replacement for compatible Johnson and Evinrude outboard fuel pumps.
At Liquid Revolutions, we’ve learned that small sealing components often play a major role in engine reliability. A simple gasket replacement can help prevent fuel system issues and keep your outboard performing as intended.
Key Features & Benefits
- Creates a Reliable Fuel Pump Seal – Helps prevent fuel and air leaks
- Supports Proper Fuel Pump Operation – Maintains fuel system efficiency
- OEM Replacement – Compatible with OMC, Johnson and Evinrude fuel pumps
- Durable Gasket Material – Designed to withstand fuel exposure and engine vibration
- Ideal for Fuel Pump Rebuilds – Recommended during service and maintenance
- Helps Improve Reliability – Prevents sealing-related fuel system issues
Common Symptoms of a Worn Fuel Pump Cap Gasket
- Fuel leaks around the fuel pump
- Air leaks in the fuel system
- Hard starting
- Inconsistent fuel delivery
- Reduced fuel pump performance
- Gasket damage during disassembly
Why Replace the Fuel Pump Cap Gasket?
Whenever a fuel pump is opened for inspection, service, or rebuilding, replacing the gasket helps ensure a proper seal during reassembly. Reusing old gaskets can increase the risk of leaks and fuel delivery problems.
A fresh gasket helps:
- Prevent fuel leaks
- Maintain proper pump operation
- Improve reliability
- Support consistent fuel delivery
- Reduce future maintenance issues
The OEM Fuel Pump Cap Gasket is a small but important component that helps maintain fuel system integrity and reliable engine performance. Whether you’re rebuilding a fuel pump or performing routine maintenance, replacing the gasket is a simple step that can help prevent bigger problems down the road.
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