ACDelco 18FR1487 Professional Durastop Rear Driver Side Disc Brake Caliper Assembly without Pads (Friction Ready), Remanufactured in Calipers Damaged and obsolete parts are replaced and are end of line tested to ensure they perform to ACDelco specifications. In addition, remanufacturing returns components back into service rather than processing as scrap or simply disposing of them. These loaded calipers contain Ethylene Propylene (EPDM) rubber components to provide superior resistance to heat, corrosion, and leakage. Professional Series ACDelco Acdelco 18FR1487 Rear Driver Side Disc Brake Caliper Friction Ready Caliper Without Pads ACDelco® 13546599 - GM Original Equipment™ Semi-Loaded Rear Driver Side Disc Brake Caliper Mpn 13546599 Bleeder screws, copper sealing washers, hardware, and mounting brackets are all included for easy installation. ACDelco Professional Remanufactured Friction Ready Disc Brake Calipers use both aluminum and iron castings, making them the high quality replacement ideal for many vehicles on the road today. Pressure tested to ensure safe and confident braking These friction ready disc brake calipers will provide the same performance, durability, and service life you expect from ACDelco.