Genuine OEM Audi Coolant Hose, part number 4E0121448AE. This hose is a crucial component in the engine cooling system, responsible for circulating coolant to maintain optimal engine operating temperatures. Weighing 0.104 kg and measuring 0.24m x 0.111m x 0.05m, it is designed for precise fitment. Opting for a genuine OEM hose guarantees the correct material composition, resistance to thermal cycling, and accurate routing for reliable, leak-free performance.