239133 Volvo Compatible Injector Pump Overflow Valve

What does an injector pump overflow valve do?

An injector pump overflow valve is a critical pressure control component inside the fuel injection pump of heavy-duty commercial vehicles, redirecting excess fuel back to the low-pressure circuit to maintain pressure balance.

Engine and vehicle compatibility

This component is essential for ensuring stable engine operation by regulating the recirculated fuel volume. It is compatible with a wide range of Volvo engines, including the TD102, TD122, D12C, D12D, D16C, D10A, TD103, TD123, D12A, and D12 series. This part is also fitted to various Volvo models such as the F10, F12, FH12, FH16, FL10, FL12, FM10, FM12, NH12, NL10, NL12, VHD, VNL, B10B, B10M, and B12 trucks.

Installation and maintenance guidance

To ensure correct installation and prevent engine performance issues or increased fuel consumption, technicians should verify the pump type and opening pressure requirements. Proper maintenance of the fuel system helps prevent irregular fuel flow and ensures the stability of the injection process during heavy-duty operation.

Troubleshooting and selection

When replacing this component, it is vital to confirm the exact engine match to maintain correct pressure thresholds. Consult your authorized distributor to ensure perfect fitment for your specific engine configuration.

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.