Genuine OEM Audi Engine Coolant Hose, part number 4G0121447AK. This hose transports coolant to regulate engine temperature, playing a critical role in the vehicle's thermal management system. It connects various components within the engine cooling circuit. Weighing 0.056 kg and measuring 0.195 m in length, its precise dimensions and durable construction are vital for maintaining proper fluid flow and preventing leaks, ensuring reliable engine operation.