Genuine OEM Audi Engine Coolant Hose, part number 4M0819374CG. This critical component is responsible for carrying engine coolant between various parts of the cooling system, ensuring efficient heat transfer and temperature regulation. It is located within the engine bay, connecting specific cooling system components as shown in the assembly diagram. Constructed from high-quality, reinforced rubber, this hose is designed to withstand extreme temperatures and pressures, measuring 0.325 meters in length. Using a genuine OEM coolant hose guarantees the correct internal diameter, routing geometry, and material composition for leak-free performance and long-term reliability of the cooling system.