7420741620 Renault Trucks DXi11 Overflow Valve

What does an overflow valve do?

This injector pump overflow valve plays a vital role in the fuel injection system by regulating internal pump pressure. By redirecting excess fuel back to the return line, it maintains a constant pressure balance, which is essential for stable engine idling and consistent fuel consumption in heavy commercial vehicles.

Vehicle compatibility and engine fitment

This specific component is designed for use in Renault Trucks Premium models equipped with DXi11 engines. It serves as a reliable replacement for components within the fuel system, ensuring that the recirculation volume remains constant at the required pressure threshold to prevent irregular fuel flow.

Installation and maintenance guidance

When performing installation, technicians should verify the M10x1 thread size and ensure all sealing elements are correctly seated to prevent pressure drops. Maintaining this component is crucial for preventing engine power loss or irregular combustion patterns caused by pressure imbalances.

Troubleshooting and symptoms

A malfunctioning overflow valve can lead to symptoms such as unstable idling or increased fuel consumption. Regular inspection of the fuel system components helps ensure long-term operational reliability for heavy-duty engine groups. Consult your authorized distributor.

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.