Genuine OEM Audi Generator Belt Tensioner Damper, part number 059145201H. This component is crucial for the accessory drive system, maintaining proper tension on the generator belt and effectively dampening vibrations to ensure smooth and reliable operation of the generator and other belt-driven accessories. It measures approximately 0.25 m in length and weighs about 0.98 kg. A genuine OEM tensioner ensures precise spring calibration and damper performance, which is vital for preventing belt slippage, reducing wear on pulleys, and extending the life of the accessory drive system.