Genuine OEM Volkswagen Control Unit for Petrol Engines, part number 03C906021N. This electronic control module is responsible for managing various engine parameters and functions. It is typically located within the engine bay. The unit has dimensions of 0.205m x 0.18m x 0.04m and weighs 0.879kg. Genuine OEM electronic control units are crucial for ensuring correct firmware, sensor calibration, and overall system compatibility, guaranteeing reliable engine operation.