Genuine OEM Audi Rear Center Brake Line, part number 9J1614763B. This critical component carries hydraulic fluid from the master cylinder to the rear brake system, ensuring reliable and responsive braking performance. It is positioned along the underbody, connecting to the rear brake components. This line is approximately 2.57 meters long. Choosing a genuine OEM brake line ensures the correct material composition, pressure rating, and precise routing geometry, which are paramount for brake system safety and integrity.