0103 074 Volvo and Renault Trucks Overflow Valve

What does an overflow valve do?

The injection pump overflow valve is a critical control component that maintains constant internal pump pressure by redirecting excess fuel back to the return line. This component is essential for regulating fuel delivery and ensuring stable idle and consistent engine power in diesel injection systems.

Compatible vehicles and engines

This part is compatible with Volvo engines such as the D13, D16, and FM series, as well as Renault Trucks models like the Kerax, Magnum, and Premium. It is also fitted to Mack Granite and Pinnacle trucks. This component ensures high-performance fuel regulation across these heavy commercial vehicle applications.

Installation and maintenance

When performing maintenance or repairs, technicians should verify the M10x1,5 thread size and the specific pump type to ensure a precise fit. Proper installation helps prevent fluctuations in fuel pressure that can lead to increased consumption or loss of power. Check the compatibility list for exact engine matchings.

Troubleshooting and selection

Regular inspection of the overflow valve can prevent broader fuel system issues. Ensuring the valve operates at the correct pressure is vital for maintaining the integrity of the entire injection system in heavy-duty engines.

OE cross-reference

0103 074 (Injector Pump Overflow Valve) is the equivalent of the Renault Trucks and Volvo OE numbers. This part directly replaces Renault Trucks OE number 7420430101. It also replaces Volvo OE number 20430101.