Genuine OEM Volkswagen Control Unit, part number 03F906070FS5K0. This control unit is essential for managing the petrol engine's operations, including fuel injection, ignition timing, and emissions control. It is typically located within the engine bay. This unit has dimensions of 0.18 m x 0.18 m x 0.04 m and weighs 0.779 kg. Genuine OEM control units are critical for ensuring the correct firmware and sensor calibration, which directly impacts engine performance and longevity.