Genuine OEM Volkswagen Control Unit For Petrol, part number 04C906026BQ. This electronic control unit is responsible for managing various engine parameters and functions. It is typically located within the engine bay or passenger compartment. The unit has dimensions of 0.11m x 0.2m x 0.052m and weighs 0.531 kg. Genuine OEM control units are essential for ensuring the correct firmware and sensor calibration, which is critical for the proper functioning and longevity of the engine management system.