Genuine OEM Audi Engine Coolant Hose, part number 80B819350R. This hose is a vital component of the engine's cooling system, responsible for transporting coolant to maintain optimal engine operating temperatures. It is a flexible rubber hose, approximately 0.4 meters long and weighing 0.149 kg. Using a genuine OEM hose ensures the correct material composition, precise shape, and durability to withstand the high temperatures and pressures of the cooling system, preventing leaks and ensuring efficient thermal management.