Genuine VW/Audi Brake Hydraulic Line - 4H0971502 - This is a genuine OEM brake hydraulic line for Volkswagen and Audi vehicles. It is designed to provide a reliable connection between the brake caliper and the brake master cylinder, ensuring maximum braking performance. This line is an exact fit replacement part for the following vehicles: Audi A4, A5, A6, A7, A8, Q5, Q7, S4, S5, S6, S7, S8, TT, and Volkswagen Passat, Touareg.