The disc brake caliper is suitable for Caterpillar parts Wheel-Type Loader: 916, 920, 926, 926A, 930, 930R, G916, G926; Integrated toolcarrier: IT18, IT18B, IT28, IT28B; PAVING COMPACTOR: CP-643, CP-653, CS-643, CS-653; ENGINE – MACHINE: 3204, 3304. It is hydraulic brake group part with the brake pads inside. After the booster working, the magnified pressure come out from the booster to the brake caliper, and then the piston in the brake caliper make the brake pad clamp to achieve the stop of the brake rotor. Finally, the wheel will be stopped.