Genuine OEM Volkswagen Engine Control Unit, part number 06K997072C. This unit is the brain of the engine, responsible for managing fuel injection, ignition timing, and other critical functions to ensure optimal performance and emissions. It is typically located in the engine bay or passenger compartment. The unit weighs approximately 0.904 kg and has dimensions of 0.182m x 0.182m x 0.045m. Genuine OEM engine control units are essential for maintaining the precise calibration and firmware required for smooth, efficient, and reliable engine operation.