Left.2013-19. Right.2013-19. W/O GRAY CALIPERS. A pin used with a float style Caliper, which Mounts the Caliper to a Caliper bracket through a Caliper guide pin bolt, allowing the Caliper to slide freely during braking. Disc Brake Caliper Bolt. From 07/22/2015. Heavy Duty Brakes. Incl.Guide Pin Bolts,Boots. Incl.Guide Pins,Guide Pin Boots. Painted Caliper. To 07/22/2015.