21697342 Volvo FH16 D16G Overflow Valve

What does an overflow valve do?

This injector pump overflow valve serves as a critical control component within the fuel system. It maintains the internal pressure balance of the injection pump by redirecting excess fuel back to the return line, ensuring consistent injection timing and stability. Using high-strength components, it is built to withstand the demanding operating conditions of heavy commercial vehicles.

Vehicle and engine compatibility

This specific part is compatible with Volvo FH16 trucks equipped with D16G engines. It serves as a reliable replacement for the fuel system components in these heavy commercial vehicle applications. The part is manufactured to meet OE standards for precision and durability.

Installation and maintenance

When performing maintenance or replacement, technicians should verify the M10x1 thread size and ensure the valve is seated correctly to prevent pressure drops. Proper installation is vital to avoid symptoms like unstable idling or increased fuel consumption. Always check that the fuel return lines are clear of debris during the installation process.

Troubleshooting engine performance

Monitoring engine performance can help identify when an overflow valve needs attention. If engine power fluctuates or fuel consumption increases, it may indicate that the pressure regulation within the injection pump is no longer within optimal parameters. Consult your authorized distributor.

OE cross-reference

0103 064 (Injector Pump Overflow Valve) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21697342.