Genuine OEM Audi Coolant Hose, part number 6R0122157AA. This reinforced rubber hose is an integral part of the engine cooling system, responsible for transporting coolant to and from the turbocharger assembly to manage its operating temperature. It features specific bends and connections for precise routing within the engine bay. Weighing 0.527 kg and measuring approximately 42.5 cm in length, this hose is built to withstand high temperatures and pressures. Using a genuine OEM coolant hose ensures the correct material properties and exact routing geometry, critical for preventing leaks and maintaining efficient turbocharger cooling.