Parts list: № Number Qty Name Options 1 R561464 2 Brake Rear Axle Brake Piston, C20 2 RE304936 6 Spring Assembly 3 R561462 2 Plate 4 R562295 4 Plate 5 RE587237 4 Brake Disk 6 R320895 2 O-Ring 7 R562193 2 O-Ring Next page: ST1018848 Trailer Brake Valve, W/ Pre Brake (180001 - ) ST1012479 Brake Valve / Chassis Wiring Harness , W/ Air Trailer Brake (180001 - ) ST959454 Brake Valve, W/O Secondary Brake, W/ Hydraulic Trailer Brake ( - 180000) ST1012530 Trailer Brake Valve (180001 - ) ST1011984 Brake Valve / Chassis Wiring Harness, W/ O Secondary Brake, W/ O Hydraulic Trailer Brake (180001 - ) ST953310 Oil Line, Rear Axle, W/ Air Trailer Brake, W/O Secondary Brake and Hydraulic Trailer Brake ST954712 Brake Valve, W/O Secondary Brake, W/O Trailer Brake