Genuine OEM Volkswagen Control Unit, part number 03C906016BB. This control unit is essential for managing the petrol engine's operational parameters, including fuel injection, ignition timing, and emissions control. It is typically located within the engine bay. The unit weighs approximately 0.882 kg and has dimensions of 0.205m x 0.18m x 0.04m. Genuine OEM parts are critical for engine control units to ensure correct firmware and precise sensor calibration for optimal performance and longevity.