Genuine OEM Audi Coolant Hose with Coupling, part number 4K0122101BP. This essential component is responsible for transferring coolant between various engine cooling system components, maintaining the engine's optimal operating temperature. It is integrated within the vehicle's complex network of coolant lines. Weighing approximately 0.615 kg, this hose is designed for resilience. Opting for a genuine OEM coolant hose ensures correct routing geometry, material resistance to heat and pressure, and leak-free performance, vital for engine longevity.