Brake Caliper: Reassembly

Coat pistons and caliper bores with brake cylinder paste. Install piston seals, then install pistons. Make sure pistons are not tilted when inserting. On 2-piston calipers, ensure 20° piston angle is preset. Install dust boots and retaining rings.

Fig 1: Disassembled View of 4-Piston Caliper Caliper is used as front caliper on all models except 318i.