Description
This is a genuine Mercedes-Benz EGS51 transmission control unit for C-Class W203 and E-Class W210 models. The primary OEM number is A0255450432, and this module is designed as the electronic controller for the automatic transmission system.
Its job is to process input from vehicle and transmission sensors, then manage shift timing, gear engagement and transmission operating strategy. By coordinating hydraulic and electronic commands, it helps the gearbox deliver smooth shifting, proper response and protective control under varying driving conditions.
Common signs of a faulty unit include harsh or delayed shifting, incorrect gear selection, transmission warning messages, limp mode, loss of communication with the gearbox system or erratic automatic operation. In some cases, gear changes may become inconsistent or the vehicle may hold a single gear.
This is a used original part removed from a vehicle and tested before sale. Match the exact OEM number A0255450432 before ordering. Professional installation is recommended, and coding, programming or adaptation may be required depending on vehicle configuration.
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/
