Genuine OEM Volkswagen Control Unit for Diesel Engines, part number 03L906018D. This control unit is vital for the precise management of diesel engine operations, including fuel delivery and emissions systems. It is typically mounted in the engine compartment. The unit weighs approximately 0.666 kg and has dimensions of 0.205m x 0.18m x 0.04m. Genuine OEM status ensures correct firmware and sensor calibration for reliable engine operation.