239133 Volvo B10M D10A Overflow Valve

What does an overflow valve do?

This injector pump overflow valve acts as a critical pressure control component within the fuel injection pump. By redirecting excess fuel back to the return line, it maintains constant internal pump pressure, which is essential for stable engine operation and consistent fuel delivery.

Vehicle and engine compatibility

This specific component is designed for use in Volvo B10M trucks equipped with D10A engines. It serves as a reliable replacement to ensure the fuel system operates within the required pressure thresholds for these heavy commercial vehicle engines.

Installation and maintenance

For proper installation, technicians should verify that the valve matches the specific opening pressure requirements of the existing injection pump. Ensuring a clean connection and checking all seals during replacement helps prevent air ingress and maintains the integrity of the fuel circuit.

Troubleshooting and selection

Regular inspection of the overflow valve can help prevent symptoms such as irregular idling or increased fuel consumption caused by pressure imbalances.

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.