Genuine OEM Audi Alternator Pulley, part number 06E903119S. This component is crucial for transmitting power from the engine's accessory drive belt to the alternator, enabling it to generate electricity for the vehicle's electrical system and battery charging. It is mounted directly onto the alternator shaft. Weighing approximately 0.367 kg, this pulley ensures smooth and efficient operation. Choosing a genuine OEM pulley guarantees factory-specified tolerances, material strength, and precise alignment for vibration-free and long-lasting performance.