Parts list: № Number Qty Name Options 1 R46862 4 Spring 2 R125666 2 Ring 3 R125667 2 Ring 4 R552437 2 Piston 5 RE292439 2 Brake Disk 6 R552436 2 Plate Next page: ST849656 Mounting Hardware, Pneumatic Trailer Brake Kit, W/ AutoTrac™ ST1009358 Fitting, W/ O Secondary Air Trailer Brakes ( - 100096) ST828951 Fitting, W/O Brake Retractors ST830831 Sensor, Brake Valve Position ST829015 Dual Brake Pedals ST826721 Brake Valve Mounting Parts ST1010066 Oil Lines, Rear Brake, Group 47/48 Tires ( - 100096) ST1027932 Brake Valve, W/O Secondary Brake, W/O Trailer Brake, W/O Front Brake (100097 - ) ST998102 Oil Lines, Rear Brake, Group 47/48 Tires (100097 - 100825) ST1035222 Oil Lines, Rear Brake, Group 47/48 Tires (100826 - )