Genuine OEM Volkswagen Control Unit for Petrol Engine, part number 03C906021L. This engine control module manages critical engine operations such as fuel delivery, ignition timing, and emissions control. It is vital for the smooth and efficient running of the engine. The unit weighs 0.88 kg and has dimensions of 0.205m x 0.18m x 0.04m. Genuine OEM engine control units are essential for ensuring correct firmware, sensor calibration, and signal characteristics, guaranteeing reliable engine operation.