Genuine OEM Audi Coolant Hose, part number 5C0122051B. This critical component is designed to transfer coolant efficiently between various engine components and the radiator, ensuring the engine operates within its optimal temperature range. It is positioned as part of the main cooling circuit, connecting to the radiator. Weighing 0.665 kg, this hose is constructed from durable materials to withstand high temperatures and pressures. Using a genuine OEM coolant hose ensures precise fitment, proper routing, and resistance to degradation from engine coolants, preventing leaks and maintaining cooling system integrity.