Description
This Mercedes-Benz fuel pump control module is a genuine OEM electronic component for the Mercedes W212 E-Class. Primary OEM number 2129000306. It is designed to regulate the electric fuel pump inside the fuel tank, controlling pump speed and delivery pressure according to commands from the engine control unit, so the engine receives the correct amount of fuel under every driving condition, from a cold start in winter to sustained full load on the highway.
Its job is to switch and modulate the power supplied to the fuel pump, adjusting fuel flow to actual engine demand instead of running the pump at full output all the time. This reduces electrical load, pump wear, and operating noise. A properly working fuel pump control module supports stable fuel pressure, smooth acceleration, reliable starting, and correct operation of the entire fuel supply system on the vehicle.
Common signs of a faulty unit include long cranking, hard starting or no start, engine stalling, loss of power under acceleration, rough running, a fuel pump that does not prime when the ignition is switched on, and fault codes stored in the engine or fuel system memory. When the module fails to drive the pump correctly, the engine may run lean, hesitate, or shut off without warning.
This is a used original part, removed from a vehicle and tested before sale. Match the exact OEM number 2129000306 before ordering. Professional installation is recommended, and coding or adaptation with a diagnostic tool may be required where applicable, so confirm the fitment details for your model year before you buy.
Returns accepted only for genuine faults — faulty on arrival, not as described, or wrong part supplied — requested within 14 days, with all 3 anti-tamper stickers intact. No returns for change of mind, incorrect installation, coding/programming, or buyer compatibility errors; checking compatibility (OEM number, firmware, vehicle) is the buyer’s responsibility. Full policy: https://giantparts.eu/refund-and-returns/
