7035096 Volvo FL12 TD123 Overflow Valve

What does an overflow valve do?

The injector pump overflow valve is a vital pressure control component located within the fuel injection pump of heavy commercial vehicle engines. Its primary role is to redirect excess fuel back to the low-pressure circuit, maintaining a constant recirculated volume at a specific pressure threshold to ensure stable combustion and prevent pressure spikes.

Vehicle and engine compatibility

This specific overflow valve is designed for use in Volvo FL12 trucks featuring the TD123 engine. It functions as a reliable solution for workshop technicians and fleet managers looking to maintain engine performance and fuel delivery stability in heavy-duty applications.

Installation and maintenance guidance

When performing installation, it is essential to work in a clean environment to prevent contaminants from entering the fuel system. Technicians should ensure the system is properly bled of air after the component is seated to prevent air pockets from disrupting engine timing or causing further faults.

Troubleshooting and selection

To ensure correct fitment, always verify that the valve matches the specific requirements of the injection pump installed in the vehicle. Using an incorrect valve can lead to irregular fuel flow and compromised engine running stability.

OE cross-reference

0101 045 (Injector Pump Overflow Valve) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 7035096.