Genuine OEM Audi Coolant Hose, part number 4K0819344B. This hose is designed to transport coolant efficiently within the engine cooling system, playing a critical role in maintaining optimal engine operating temperatures. It is a flexible component connecting various parts of the cooling circuit. Weighing approximately 0.213 kg, this hose measures 0.33m in length. Choosing a genuine OEM coolant hose ensures the correct routing geometry, material composition, and resistance to temperature and pressure fluctuations, preventing leaks and premature failure.