442 990 55 63 Injector Pump Overflow Valve for Mercedes-Benz
0101 039
Summary
This injector pump overflow valve is designed for Mercedes-Benz heavy commercial vehicles. It serves as a critical pressure control component within the fuel system to ensure stable engine operation and precise fuel delivery. Equivalent to OE Mercedes-Benz 4429905563.
| EAN Code | 8699031061405 |
|---|
Ready to Order
Compatible OEM Codes
-
MERCEDES BENZ
- 442 990 55 63
-
MAN
- 51.98150-0173
Description
What does an injector pump overflow valve do?
An 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.Vehicle and engine compatibility
This component maintains the injection pump's pressure balance, which directly affects engine stability and fuel consumption. By redirecting excess fuel, it prevents pressure spikes that could disrupt the injection timing. VADEN ORIGINAL overflow valves are manufactured to OE dimensions to provide a reliable solution for heavy commercial vehicle fleets.Installation and maintenance guidance
This part is specifically compatible with Mercedes-Benz engines. It is essential for maintaining consistent fuel flow and preventing irregular engine running caused by pressure imbalances in the fuel circuit.Troubleshooting engine stability
When replacing this component, technicians should inspect the return lines and ensure no air is trapped in the system to maintain optimal pressure thresholds and prevent further wear on the injection pump.OE cross-reference
0101 039 (Injector Pump Overflow Valve) is the equivalent of the Mercedes-Benz OE number. This part directly replaces Mercedes-Benz OE number 4429905563.Other OEMs
MAN
- 51981500173
- 51.98150.0173
- 51-98150-0173
- 51 98150 0173
- 51.98150-0173
MERCEDES BENZ
- A4429905563
- 4429905563
- 442.990.5563
- 442.990.55.63
- 442 990 5563
- 442 990 55 63
Compatible Vehicles
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| MAN | |||
| MERCEDES BENZ |
FAQ
What is the function of an injector pump overflow valve?
It maintains internal pump pressure by redirecting excess fuel back to the return line, ensuring stable engine operation and preventing pressure spikes.
Which vehicles are compatible with this part?
This component is compatible with Mercedes-Benz heavy commercial vehicle engines.
What are the symptoms of a failing overflow valve?
Common symptoms include irregular engine running, loss of engine performance, unstable idling, and increased fuel consumption.
How does this component affect engine performance?
By keeping the recirculated fuel volume constant at a set pressure threshold, it prevents disruptions in fuel flow that cause engine instability.
What are the OE reference numbers of this part?
0101 039 directly replaces Mercedes-Benz OE number 4429905563.