Genuine OEM Volkswagen Control Unit, part number 03C906014BJ602. 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. The unit weighs 0.587 kg and has dimensions of 0.18m x 0.952m x 0.04m. Genuine OEM control units are critical for ensuring the correct firmware and sensor calibration, which directly impacts engine performance and longevity.