Genuine OEM Volkswagen Control Unit, part number 03C906016FQ5M0. This is the main electronic control unit for the petrol engine, responsible for managing various engine functions. It is typically located within the engine bay. The unit has dimensions of 0.18m x 0.17m x 0.04m and weighs 0.648 kg. Genuine OEM parts guarantee correct firmware and sensor calibration for reliable engine operation.