239133 Volvo FH16 D16C Overflow Valve

What does an overflow valve do?

The injector pump overflow valve is a critical control component that maintains constant internal pump pressure by redirecting excess fuel back to the return line. This mechanism is essential for regulating the injection process, directly influencing engine power, idle stability, and overall fuel consumption levels in heavy-duty diesel engines.

Compatible vehicles and engines

This specific component is compatible with Volvo FH16 vehicles featuring the D16C engine. It serves as a reliable replacement to ensure the fuel system operates within specified pressure tolerances, preventing performance drops or uneven fuel distribution during heavy commercial operations.

Installation and maintenance

For optimal results, technicians should ensure a clean working environment during installation to prevent air or debris from entering the fuel lines. After replacement, the fuel system must be properly bled of air to restore correct pressure balance and ensure stable engine operation.

Troubleshooting and selection

Check the compatibility list to ensure this component meets your specific engine requirements.

OE cross-reference

0101 045 (Injector Pump Overflow Valve) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 239133.