Genuine OEM Audi Alternator Pulley, part number 059903119J. This component is crucial for transferring rotational power from the engine's accessory belt to the alternator, enabling it to generate electrical power for the vehicle's systems. It is installed on the alternator shaft. Weighing 0.292 kg, this multi-ribbed pulley is designed for precise fitment and smooth operation. Using a genuine OEM pulley ensures correct belt alignment, optimal tension, and factory-specified vibration dampening for a long service life of the alternator and accessory drive system.