Genuine OEM Audi Diesel Engine Control Unit, part number 04L906016FN. This control unit is essential for managing the complex operations of a diesel engine, including fuel injection timing, emissions control, and overall engine performance. It is typically mounted within the engine bay. The unit has dimensions of 0.205m x 0.18m x 0.035m and weighs 0.912 kg. Genuine OEM engine control units are crucial for ensuring the correct firmware, sensor calibration, and signal characteristics required for optimal and safe engine operation.