Genuine OEM Audi Coolant Hose, part number 8R0819371E. This flexible rubber hose is a vital component of the engine cooling system, responsible for transporting hot and cold coolant between various engine components, such as the radiator, engine block, and heater core. Its robust construction ensures reliable fluid transfer under varying temperatures and pressures. Measuring 0.405 meters in length and weighing 0.1561 kg, this hose is designed to exact factory specifications. Using genuine OEM coolant hoses guarantees correct routing, material resistance to coolant chemicals and temperature extremes, and long-term durability, preventing leaks and maintaining cooling system integrity.