Genuine OEM Audi Alternator Voltage Regulator, part number 059903803G. This electronic component is responsible for precisely controlling the output voltage generated by the alternator. It ensures that the vehicle's electrical system receives a stable and correct voltage, preventing overcharging or undercharging of the battery and protecting sensitive electronics. Weighing 0.176 kg, this regulator is designed for accurate electrical performance. Opting for a genuine OEM voltage regulator guarantees correct calibration and reliable operation within the vehicle's complex charging system.