Genuine OEM Audi AC Generator Drive Belt, part number 06E903137AC. This belt is responsible for driving the alternator, which generates electrical power for the vehicle's systems and recharges the battery. It is a vital component for maintaining the electrical integrity of the vehicle. Weighing 0.229 kg, this belt is manufactured to precise specifications for optimal power transfer and durability. Choosing a genuine OEM belt ensures the correct material composition, tension, and resistance to wear, providing long-term reliability for the electrical charging system.