13974. Caliper mount retainer kit. Left. Right. 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. Disc Brake Caliper Hardware Kit. From 12/01/2008. Incl.Guide Pin Boot,Guide Pin Cover.