Genuine OEM Audi Hydraulic Brake Line, part number 7L8614729A. This critical component is responsible for transmitting hydraulic pressure from the master cylinder to the brake calipers or wheel cylinders, enabling the vehicle's braking function. It is a pre-formed metal tube designed for a specific routing within the brake system. Constructed from robust materials, this line measures approximately 29.8 cm in length. Using a genuine OEM brake line ensures correct pressure transmission, proper routing, and material integrity, which are vital for maintaining the safety and performance of the braking system.