Genuine OEM Audi Coolant Hose, part number 4M0122055DF. This flexible hose is a key component in the engine cooling system, designed to transport coolant between various parts to maintain optimal engine operating temperatures. It features integrated couplings for a secure and leak-free connection. Constructed from durable, heat-resistant rubber and plastic, genuine OEM hoses ensure correct routing geometry and resistance to fluid degradation, preventing leaks and maintaining system pressure.