Genuine OEM Volkswagen Control Unit, part number 04L906016EA. This is the main control unit for the diesel engine, managing various operational parameters. It is typically mounted in the engine bay. This unit has dimensions of 0.205m x 0.18m x 0.04m and weighs 0.824kg. Genuine OEM control units are essential for ensuring correct firmware and sensor calibration, guaranteeing optimal engine performance and reliability.