Mahle K03 Turbocharger - 030TC14306000;A K03 turbocharger is a turbocharger manufactured by Mahle, a German automotive parts manufacturer. This particular model, 030TC14306000, is a K03 turbocharger with a turbine wheel diameter of 56mm and a compressor wheel diameter of 45mm. It is designed to provide increased power and torque for a variety of engines, and is compatible with both gasoline and diesel engines.