Genuine OEM Audi Coolant Hose with Coupling, part number 5QF122101B. This hose is designed to transport coolant efficiently between various engine components, playing a critical role in maintaining optimal engine operating temperature. It is positioned within the engine cooling system, connecting key parts of the coolant circuit. Weighing 0.211 kg and measuring 0.43 meters in length, this hose is engineered for precise fitment and durability. Choosing a genuine OEM coolant hose ensures the correct material composition and coupling design for leak-free performance and long-term reliability.