21458307 Volvo compatible Injector Pump Overflow Valve

What does an injector pump overflow valve do?

The injector pump overflow valve is a critical component within the fuel system that maintains constant internal pressure by redirecting excess fuel back to the return line.

Compatible Volvo engines and models

This component is specifically engineered for Volvo engines, including the D12, D13, and D16 series found in models such as the FH, FM, and VNL. It serves various applications across Volvo FH12, FH13, FH16, FM10, FM11, FM12, FM13, FMX, NH12, VHD, VNL, B11R, and B13R engines to ensure reliable fuel delivery.

Installation and maintenance guidance

To ensure proper installation, technicians should verify that the M16x1.5 thread size matches the existing pump configuration. Maintaining correct opening pressure is vital for engine idle stability and preventing excessive fuel consumption. Always check the injection pump serial number to confirm exact compatibility before installation.

Troubleshooting fuel pressure issues

When troubleshooting engine performance or fluctuations in fuel pressure, inspecting this valve is a recommended step. Vaden Original provides high-strength components designed to withstand heavy-duty operating conditions in commercial fleets.

OE cross-reference

0103 070 (Injector Pump Overflow Valve) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21458307.