Genuine OEM Audi Alternator Pulley, part number 06E903119M. This critical component is responsible for transferring rotational energy from the engine's accessory drive belt to the alternator, enabling it to generate electrical power. It is mounted on the front shaft of the alternator. Weighing 0.573 kg, this pulley is engineered for precise fitment and smooth operation. Choosing a genuine OEM alternator pulley ensures factory-specified tolerances, material strength, and balance, preventing premature wear on the alternator and accessory belt system.