Genuine OEM Volkswagen Control Unit for Petrol Engine, part number 03E906023AQ. This control unit is the central computer for the petrol engine, managing fuel injection, ignition timing, and other critical functions to optimize performance and emissions. It is typically located within the engine bay. The weight of this unit is 0.677 kg. Genuine OEM parts are essential for engine control units as they ensure correct firmware, precise sensor calibration, and reliable operation, preventing potential engine performance issues.