Genuine OEM Audi Coolant Hose with Coupling, part number 3C0122157FH. This critical component is responsible for circulating engine coolant, ensuring efficient heat transfer and maintaining optimal engine operating temperatures. It features an integrated coupling for a secure connection and is partially covered with heat shielding to protect against high temperatures. Constructed from durable, heat-resistant rubber, it is designed for longevity and reliable performance within the engine cooling system. Using a genuine OEM coolant hose guarantees the correct routing geometry, material composition, and pressure resistance, preventing leaks and ensuring the integrity of the cooling system.