7035096 Volvo VNL D12 Fuel System Overflow Valve

What does an injector pump overflow valve do?

The injector pump overflow valve is a critical pressure control component located within the fuel injection pump. Its primary function is to maintain constant internal pump pressure by redirecting excess fuel back to the return line. This process ensures that the fuel delivery remains stable, preventing irregular flow and protecting the pump's internal balance.

Vehicle and engine compatibility

This specific component is engineered for use in Volvo VNL trucks equipped with D12 engines. It serves as a reliable replacement to ensure consistent fuel metering and optimal engine idling under heavy-duty operating conditions.

Installation and maintenance

To ensure proper installation, technicians should verify the pump type and opening pressure requirements before replacement. When installing this component, it is essential to inspect the fuel lines and ensure that no air is trapped in the system during the process. Proper maintenance of the overflow valve helps prevent symptoms such as increased fuel consumption or loss of power.

Troubleshooting fuel pressure issues

Check the compatibility list to confirm exact fitment for your vehicle's 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 7035096.