ACDelco Professional DuraStop Disc Brake Caliper Bushing is a high quality replacement component for your vehicle's disc brake caliper. The disc brake caliper bushing functions to move the caliper back and forth. Brakes are one area in which vehicle owners simply cannot compromise. With ACDelco Brakes, you can get the peace of mind that comes with parts that are expertly engineered, manufactured to stringent tolerances, thoroughly tested and backed by the ACDelco name. Choose from our GM Original Equipment, Professional DuraStop, Advantage, and Specialty Series to meet your performance needs and budget.