Genuine OEM Audi Engine Coolant Hose, part number 4H0121449N. This hose transports coolant to regulate engine temperature, playing a critical role in the vehicle's thermal management system. It is positioned on the rear right side of the engine assembly. Weighing 0.068 kg and measuring 0.188 m in length, its specific routing and durable material are crucial for maintaining proper fluid flow and preventing leaks in high-temperature engine environments.