Genuine OEM Audi Inverter Coolant Line, part number 4KE145948F. This essential pipe is responsible for circulating coolant to the drive motor inverter, playing a critical role in thermal management and ensuring the inverter operates within optimal temperature ranges. It is a precisely formed component, approximately 1.84 meters in length and weighing 0.343 kg. Using a genuine OEM coolant line guarantees the correct routing geometry, material composition, and resistance to thermal and chemical stresses, preventing leaks and ensuring the long-term reliability of the inverter cooling system.