Genuine OEM Volkswagen Engine Control Unit, part number 06A906033HT. This unit is the central computer for Otto cycle engines, responsible for managing critical engine functions such as fuel injection, ignition timing, and emissions control. It is located within the engine bay assembly. The unit measures 0.181m in length, 0.15m in width, and 0.04m in height, with a weight of 0.678 kg. Genuine OEM ensures the correct firmware, calibration, and sensor compatibility for reliable engine operation.