Genuine OEM Audi Coolant Hose, part number 8K0122101J. This hose is a vital component of the engine cooling system, responsible for carrying coolant to regulate system temperature. It functions as a lower radiator hose, directing cooled fluid from the radiator back into the engine. Weighing approximately 0.312 kg, this hose is designed for precise fitment and durability. Choosing a genuine OEM coolant hose ensures correct routing, resistance to high temperatures and pressures, and prevents leaks that could compromise engine cooling efficiency.