Genuine OEM Audi Drive Motor Inverter Coolant Line, part number 4KE145910D. This critical component is responsible for circulating coolant to regulate the operating temperature of the drive motor inverter. Proper thermal management is essential for the efficiency and lifespan of the electric drivetrain components. The pipe is precisely formed for correct routing within the vehicle's cooling system. Weighing approximately 0.134 kg and measuring 0.48 meters in length, it is designed for a perfect fit. Using a genuine OEM coolant line ensures the correct material, internal diameter, and connection points, preventing leaks and maintaining the integrity of the high-voltage system's cooling circuit.