Genuine OEM Audi Generator Poly V-Pully, part number 06F903119A. This metal pulley is a key component in the engine's accessory drive system, responsible for transferring rotational power from the engine to the generator via a multi-ribbed belt. It ensures the generator operates efficiently to charge the vehicle's battery and power electrical systems. Weighing 0.147 kg, this pulley is precision-machined for smooth operation. Using a genuine OEM pulley guarantees correct dimensions, material strength, and balanced rotation, which is critical for preventing belt slippage, reducing vibration, and ensuring the longevity of the generator and accessory drive system.