Genuine OEM Volkswagen Automatic Transmission Oil Return Line, part number 3C0317825A. This fluid line is an integral part of the automatic transmission cooling system, responsible for returning cooled transmission fluid from the heat exchanger back to the transmission. It ensures proper fluid circulation to maintain optimal operating temperatures and prevent overheating. Weighing 0.235 kg and measuring 0.42 meters in length. Using a genuine OEM line guarantees precise routing, correct material resistance to transmission fluid, and secure connections, preventing leaks and ensuring long-term transmission health.