7403095479 Renault Trucks Overflow Valve

What does an overflow valve do?

The injector pump overflow valve is a critical pressure control component within the fuel injection pump of heavy-duty engines. Its primary role is to maintain internal pump pressure by redirecting excess fuel back to the return line, ensuring that the volume recirculated stays constant at a specific pressure threshold. This mechanism prevents irregular fuel flow and helps purge air from the system.

Vehicle compatibility

This component is specifically designed for use in Renault Trucks heavy commercial vehicles. It provides a reliable solution for maintaining engine performance and idle stability in demanding service environments. By ensuring the internal pressure balance remains constant, it prevents common issues such as irregular fuel consumption and power loss.

Installation and maintenance

For proper installation, technicians should verify the specific pump type—whether in-line or distributor-type—to ensure correct fitment. It is essential to check that the valve matches the existing pump specifications to maintain the correct opening pressure threshold during operation.

Troubleshooting

Consult your authorized distributor to check the compatibility list.

OE cross-reference

0103 006 (Injector Pump Overflow Valve) is the equivalent of the Renault Trucks OE number. This part directly replaces Renault Trucks OE number 7403095479.