Genuine OEM Audi Coolant Hose, part number 1K0121101CR. This essential hose is designed to transfer coolant efficiently between various engine components, including connections to the turbocharger, to maintain optimal operating temperatures. It is a critical part of the engine's thermal management system. Made from high-quality, heat-resistant rubber, it weighs approximately 0.224 kg. Using a genuine OEM hose ensures the correct pre-formed shape, material resistance to engine fluids, and reliable sealing, which are crucial for preventing leaks and maintaining the integrity and efficiency of the cooling system.