7420741620 Renault Trucks Overflow Valve

What does an overflow valve do?

The injector pump overflow valve is a critical pressure control component that maintains the internal pressure balance of the fuel injection pump. By redirecting excess fuel back to the return line, it prevents pressure surges and ensures a consistent fuel flow to the injectors. This component is vital for maintaining stable idling and optimal engine performance in heavy commercial vehicle applications.

Compatible Renault Trucks models and engines

This specific overflow valve is compatible with Renault Trucks Kerax, Magnum, and Premium models equipped with DXi11, DXi12, or DXi13 engines. It serves as a reliable replacement for original components within the fuel system, ensuring the engine's fuel delivery remains consistent under heavy loads.

Installation and maintenance guidance

For proper installation, technicians should verify the M10x1 thread specification and ensure all sealing surfaces are clean. Given its role in maintaining system pressure, it is recommended to inspect the valve during routine fuel system maintenance to prevent issues like irregular idling or increased fuel consumption. Check the compatibility list.

Troubleshooting and selection

When replacing this part, ensure that the opening pressure characteristics match the requirements of the specific injection pump installed in the engine group to avoid system imbalance.

OE cross-reference

0103 064 (Injector Pump Overflow Valve) is the equivalent of the Renault Trucks OE number. This part directly replaces Renault Trucks OE number 7420741620.