Genuine OEM Audi Brake Hose, part number 5QK614739A. This brake hose is an essential part of the hydraulic braking system, connecting the master cylinder to the rest of the system. It is marked as number 1 in the diagram, indicating its position in the brake line assembly. The hose has a length of 0.75 meters and a weight of 0.122 kg. Genuine OEM brake hoses are constructed from materials that withstand high pressures and resist degradation, ensuring safe and reliable braking.