Genuine OEM Audi Upper Engine Cooler Water Hose, part number 8E0121101T. This vital component is engineered to transport hot coolant from the engine to the radiator and cooled coolant back, maintaining optimal engine operating temperatures. It is positioned as an upper hose within the engine cooling system. Constructed from durable rubber with a protective textile sleeve, it weighs approximately 0.46 kg. Choosing a genuine OEM hose guarantees the correct routing geometry, material resistance to heat and pressure, and secure connections, preventing leaks and ensuring reliable engine cooling.