21419969 Volvo FM12 D12C Overflow Valve

The injector pump overflow valve is a critical component that maintains the internal pressure balance within the fuel injection pump by redirecting excess fuel back to the return line. By regulating this pressure, the valve directly influences engine idle stability, fuel consumption rates, and overall power delivery. This component is manufactured with high-strength components to withstand the demanding thermal and mechanical stresses found in heavy commercial vehicle diesel systems.

This specific part is engineered for Volvo FM12 trucks equipped with D12C engines. It ensures precise pressure regulation to prevent performance drops during heavy-duty operation. For optimal fitment, ensure the valve matches the technical requirements of the existing injection pump assembly.

Technicians should verify the thread size and opening pressure before installation to avoid system imbalance. This unit features an M10x1 thread size for secure mounting within the pump housing. Regular inspection of the fuel return lines and sealing integrity is recommended to prevent pressure fluctuations.

Consult your authorized distributor.

OE cross-reference

0103 064 (Injector Pump Overflow Valve) is the equivalent of the Volvo OE number. This part directly replaces Volvo OE number 21419969.