Genuine OEM Audi Radiator Coolant Hose, part number 1K0122051HE. This critical hose is responsible for transporting hot coolant from the engine to the radiator and returning cooled fluid, maintaining the engine's optimal operating temperature. Its complex molded shape ensures precise routing within the engine bay. Weighing 0.699 kg, this hose is constructed from durable, heat-resistant rubber compounds. Genuine OEM coolant hoses guarantee correct material specifications, pressure resistance, and exact fitment, preventing leaks and ensuring efficient engine cooling.