244900 Volvo NH12 D12C Overflow Valve

What does an overflow valve do?

The injector pump overflow valve serves as a critical pressure regulation component within the diesel injection pump. By redirecting excess fuel back to the return line, it maintains the necessary internal pressure balance required for consistent fuel delivery. This component is vital for preventing irregular fuel flow and ensuring the engine operates smoothly under varying load conditions.

Vehicle and engine compatibility

This specific part is compatible with Volvo NH12 trucks equipped with D12C engines. It provides a reliable solution for maintaining engine idling stability and preventing excessive fuel consumption caused by pressure fluctuations. The component is designed to withstand the high-pressure environments typical of heavy commercial vehicle fuel systems.

Installation and maintenance guidance

For professional installation, technicians should ensure that all mounting surfaces are clean and that the valve is seated correctly to prevent air ingress into the fuel circuit. When replacing this component, it is recommended to inspect the associated fuel lines and seals to ensure complete system integrity. Proper maintenance of the overflow valve helps prevent sudden power loss or erratic engine running.

Component reliability

VADEN ORIGINAL components are manufactured to meet rigorous industry standards, providing a high-strength solution for fleet managers and workshop technicians seeking reliable engine parts.

OE cross-reference

0101 045 (Injector Pump Overflow Valve) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 244900.