239133 Volvo FL10 TD103 Overflow Valve

What does an overflow valve do?

The injector pump overflow valve is a critical pressure control component located inside the fuel injection pump of heavy-duty commercial vehicles. Its primary role is to redirect excess fuel back to the low-pressure circuit or the fuel tank, maintaining a constant internal pressure threshold. This process is vital for regulating fuel flow and purging air from the system, which directly influences engine running stability and prevents irregular fuel delivery.

Vehicle and engine compatibility

This specific overflow valve is designed for use in Volvo FL10 trucks equipped with TD103 engines. It serves as a reliable replacement for original equipment parts, ensuring that the internal pressure balance of the injection pump remains within specified tolerances to prevent power loss or increased consumption.

Installation and maintenance

For workshop technicians, ensuring correct installation is paramount. When replacing this component, it is essential to verify that the mounting and pressure settings align with the specific pump requirements. Maintaining clean fuel lines and inspecting sealing elements during installation helps prevent future pressure disruptions in the fuel system.

Selection guidance

Consult your authorized distributor to ensure exact 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.