Genuine OEM Audi Coolant Hose, part number 2Q0122157K. This hose is designed to transport coolant between various components of the engine cooling system, ensuring efficient heat transfer and maintaining optimal engine operating temperatures. It is a vital part for preventing engine overheating. Weighing 0.157 kg and measuring 0.38 m in length, this hose features the precise routing geometry and material resistance required for reliable, leak-free coolant circulation.