Genuine OEM Audi Coolant Hose, part number 4K0819337N. This hose is designed to transfer coolant efficiently within the engine cooling system, playing a critical role in maintaining optimal engine operating temperatures. Weighing 0.119 kg, it is a precisely engineered component. Choosing a genuine OEM hose ensures correct routing geometry, material resistance to engine fluids, and reliable sealing for leak-free operation.