Fuel pump control unit MERCEDES BENZ E250 W212 2014
OEM: A2129003408
Disassembled car photo
Engine running
Tested before shipping
Guaranteed quality
Fast delivery 3–7 days
14-day returns
Details for this exact part
Code
A2129003408
OEM
A2129003408
Condition
Used
Availability
1 in stock - ready to ship
Make, model
MERCEDES E250 2009-2016
Year
2014
Engine
Diesel 2.2CDI 150KW 65192431250773
VIN
WDD2122821A685224
What is this part and why does it matter?
The fuel pump control module regulates the speed and output of the fuel pump, allowing variable flow based on engine demand rather than constant full-speed operation.
If you notice any of the following, the part likely needs replacement:
Engine hesitation or loss of power under load
Fuel pump running constantly at full noise/speed
Check Engine light with a fuel pressure or pump-related fault code
Installation information
Mounted near the fuel tank or in the engine bay, connecting to the fuel pump and vehicle wiring harness.
Frequently asked questions
Running the pump at full speed constantly wastes energy and generates unnecessary noise and heat — this module adjusts pump speed to match actual fuel demand, improving efficiency and pump longevity.
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August 2026
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Toyota Avensis
August 2026
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June 2026
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May 2026
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