Genuine OEM Audi Coolant Hose, part number 8K1819373AN. This hose is designed to transport engine coolant, playing a critical role in maintaining the engine's optimal operating temperature. It is a key component within the vehicle's cooling system. Made from reinforced, heat-resistant rubber, it measures approximately 0.265m in length. Using a genuine OEM coolant hose ensures proper fit, pressure integrity, and resistance to thermal cycling for reliable engine cooling.