Genuine OEM Volkswagen Control Unit, part number 03C906026AA5KK. This electronic control unit is responsible for managing various engine parameters and functions. It is typically located within the engine bay. The unit has dimensions of 0.205m x 0.18m x 0.04m and weighs 0.88kg. Genuine OEM engine control units are essential for ensuring the correct firmware, calibration, and sensor integration, which are critical for reliable engine operation and performance.