Genuine OEM Audi Engine Coolant Hose, part number 4K0819337S. This hose is a vital component of the engine cooling system, responsible for carrying coolant to regulate engine temperature. It connects directly to the radiator and other cooling components, ensuring efficient heat dissipation. Weighing 0.148 kg and measuring 0.22 meters in length, this formed hose is designed for durability. Using a genuine OEM hose ensures correct routing, material integrity, and resistance to high temperatures and pressures, preventing leaks and maintaining optimal engine cooling.