1Fitment: Transmission mechatronic control unit is suitable for Sagitar, fit for A1 A3 Q3, and replacement Seat Ibiza Leon Altea. 2Reference OE: Replacing manufacturer part number for reference is 0AM927769D. Double check your Oem part number for proper fitment. 3Powerful Performance: Tcu features high performance computing units, high speed slope compensation, precise electronic throttle response, providing cars with more powerful power output and higher fuel economy. 4Precise Control: The Tcm has fully optimized algorithms to control the operation of the transmission, precisely control the output power of the engine and the vehicle, and improve driving safety and driving comfort. 5Professional Unit: Transmission control unit Improve the flexibility of the transmission, provide uninterrupted power output for the transmission, hard and wear resistant, and can work for a long time.