000 477 02 29 Injector Pump Overflow Valve for Mercedes-Benz

What does an injector pump overflow valve do?

An injector pump overflow valve is a critical pressure control component located within the fuel injection pump of heavy commercial vehicle engines. Its primary function is to maintain internal pump pressure by redirecting excess fuel back to the return line, ensuring a constant pressure threshold for stable combustion.

Compatibility with Mercedes-Benz vehicles

This component is specifically engineered for compatibility with Mercedes-Benz heavy commercial vehicles. By managing the recirculated fuel volume, it helps prevent irregular fuel flow and maintains the necessary pressure balance required for consistent engine performance during operation.

Installation and maintenance guidance

For workshop technicians, maintaining the integrity of the fuel system is vital. When replacing this component, ensure that all connections are secure to prevent air ingress into the fuel circuit. Regular inspection of the overflow valve can help prevent symptoms such as unstable idling or increased fuel consumption caused by pressure imbalances.

Engine performance and troubleshooting

VADEN ORIGINAL provides high-strength components designed to meet the rigorous demands of heavy-duty diesel engines, ensuring reliable service life for fleet managers and service professionals alike.

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 0004770229.