Genuine OEM Audi Engine Coolant Hose, part number 4H0121447AC. This hose is an essential component for the engine cooling system, responsible for transporting coolant to maintain optimal engine operating temperatures. It is positioned as part of the main cooling circuit, connecting various components. Weighing 0.085 kg and measuring 0.27 m in length, this hose is engineered for durability. Choosing genuine OEM hoses ensures the exact routing, proper material flexibility, and resistance to the high pressures and temperatures encountered, preventing leaks and ensuring the longevity of the cooling system.