Genuine OEM Audi Coolant Hose with Coupling, part number 5Q0122051AT. This pre-formed rubber hose is designed to efficiently transfer coolant between various engine components, playing a vital role in maintaining the engine's optimal operating temperature. It features an integrated plastic quick-connect coupling for a secure and leak-free connection. Made from high-quality, heat-resistant rubber, it weighs approximately 0.253 kg. Using a genuine OEM hose ensures the correct routing geometry, material resistance to engine fluids, and reliable sealing, which are essential for preventing leaks and maintaining the integrity of the cooling system.