Genuine OEM Audi Coolant Hose with Coupling, part number 4M0122449Q. This hose is a critical component in the engine cooling system, designed to connect various parts like the water pump housing and oil cooler, ensuring efficient coolant circulation. It is positioned within the engine bay, facilitating the flow of coolant. Weighing 0.1251 kg and measuring 0.315 m in length, this hose features an integrated coupling for a secure and leak-free connection. Opting for genuine OEM hoses guarantees the precise routing, material integrity, and the correct coupling design, crucial for maintaining system pressure and preventing leaks under demanding engine conditions.