Genuine OEM Audi Engine Control Unit, part number 05L906022KAF3A. This unit is the central computer for the engine, responsible for managing fuel injection, ignition timing, and other vital operations. It is typically located in the engine bay. With dimensions of 0.181m x 0.15m x 0.04m and weighing 0.986 kg, it is designed for precise integration. Genuine OEM ECUs are essential for correct firmware and sensor calibration, ensuring reliable engine operation and compliance with emissions standards.