Overview - Front Brake Caliper, Four-Piston Brake

Fig 1: Exploded View Of Front Brake Caliper, Four-Piston Brake

Courtesy of AUDI OF AMERICA, LLC

1. Brake Caliper
2. Seal
   • If damaged, install the entire seal set
   • Refer to BRAKE CALIPER PISTON, REMOVING AND INSTALLING, FOUR-PISTON BRAKE 
3. Brake Caliper Piston
   • No replacement part
4. Protective Cap
   • If damaged, install the entire seal set
   • Refer to BRAKE CALIPER PISTON, REMOVING AND INSTALLING, FOUR-PISTON BRAKE 
   • Mount the cap sealing lip on the brake caliper piston.