Description
This Mercedes central locking vacuum pump is an original used unit for the W202 platform, identified by OEM number A2028000378. It is the pneumatic pump assembly used in Mercedes W202 models to operate the vehicle’s central locking and related vacuum-controlled locking functions.
Its job is to generate the pressure and vacuum needed to lock and unlock the doors, trunk and fuel flap through the car’s pneumatic central locking system. When working correctly, it provides fast, consistent actuation and supports normal convenience operation from the key or remote locking inputs.
Common signs of a faulty unit include doors that do not lock or unlock properly, an intermittent central locking response, the pump running for too long, unusual humming from the pump area, or selective failure of the trunk or fuel flap release. Vacuum leaks in the system can also place extra strain on this type of pump.
This is a used original part, removed from a vehicle and tested before sale. Please match OEM number A2028000378 before ordering. Professional installation is recommended, and diagnosis of the vacuum lines, actuators and electrical supply is advisable when replacing this component.
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/
