A0004770329 Injector Pump Overflow Valve for Mercedes-Benz

The injector pump overflow valve is a critical pressure control component inside the fuel injection pump of heavy-duty commercial vehicles, redirecting excess fuel back to the low-pressure circuit or the fuel tank. This component is vital for maintaining the internal pressure balance of the pump, ensuring that fuel flow remains regulated during engine operation.

This specific overflow valve is designed for use in Mercedes-Benz heavy commercial vehicles. It functions by managing the recirculation of fuel, which prevents pressure spikes and helps purge air from the system. By maintaining a constant pressure threshold, it directly influences engine power, idle stability, and overall fuel efficiency.

For workshop technicians and fleet managers, ensuring correct installation is key to engine reliability. Proper fitment helps prevent irregular fuel flow and performance loss. When replacing this component, always verify that the pressure regulation meets the specific requirements of the vehicle's injection system to ensure optimal performance.

Consult your authorized distributor to check the compatibility list.

OE cross-reference

0101 045 (Injector Pump Overflow Valve) is the equivalent of the Mercedes-Benz OE number. This part directly replaces Mercedes-Benz OE number A0004770329.