Brake line. Left.Coupe. Rear Left. A flexible hose, typically used on moving parts of a vehicle, which carries / delivers fluid to various components of the braking system. A hydraulic hose used between an abs pump and motor assembly and a brake master cylinder. A solid tube, typically mounted to the chassis or frame, which carries / delivers fluid to various components of the braking system. Hydraulic Line. tube. ABS Pressure. Connector pipe. FLEXIBLE.