Genuine OEM Audi Automatic Transmission Drive Chain, part number 0AW331301B. This vital component is responsible for transferring power and torque between internal shafts within the automatic transmission, enabling smooth and efficient gear ratio changes. It operates within the transmission assembly, connecting key rotating elements. Weighing approximately 2.00 kg, this chain is engineered for high strength and durability under continuous load. Opting for a genuine OEM transmission drive chain ensures precise pitch and link design, critical for quiet operation, optimal power transfer, and the long-term reliability of the entire transmission system.