7420741620 Kerax DXi11 Injector Pump Overflow Valve

What does an overflow valve do?

This injector pump overflow valve is a critical component within the fuel system that regulates internal pump pressure by redirecting excess fuel back to the return line. By maintaining this pressure balance, the component ensures stable engine idling and consistent fuel consumption during heavy-duty operation.

Compatibility and fitment

This specific part is compatible with Renault Trucks Kerax equipped with DXi11 engines. It is engineered to meet the strict requirements of the diesel injection system, ensuring that fuel delivery remains precise even under varying load conditions common in heavy commercial vehicle applications.

Installation and maintenance

Installation should be performed by a workshop technician to prevent air or debris from entering the fuel system. When replacing this component, ensure the M10x1 thread is seated correctly and that the system is properly bled of air to maintain optimal engine performance and prevent further system faults.

Troubleshooting and selection

Regular inspection of the overflow valve can help prevent symptoms such as erratic idling or loss of power. Maintaining a clean fuel system environment is essential for the longevity of all high-strength components within the injection pump assembly.

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.