Brake line. Left.caliper to pipe. PartQualifier: caliper to pipe. Rear. Right.caliper to pipe. w/ceramic brakes. 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. ABS Pressure Hose. Bleeder valve. Connecting. Connector tube.