Parts list: № Number Qty Name Options 1 RE304936 6 Spring Assembly W/ Brake Retractor 2 R125666 2 Ring 3 R125667 2 Ring 4 R305833 2 Brake 5 R324914 2 Plate 6 R334180 2 Brake 7 RE591216 2 Brake Disk Next page: ST993349 Brake Valve, Chassis Wiring Harness, W/ Hydraulic Trailer Brake ( - 120004) ST959116 Brake Valve, W/ Air Trailer Brake ( - 120004) ST993352 Brake Valve, W/ Hydraulic Trailer Brake ST962328 Brake Valve, IVT™, W/ Hydraulic Trailer Brake ( - 120004) ST963795 Rear Axle Brake Assembly, W/O Front Axle Brakes, W/O Rear Brake Retractors, LH Illustrated ST1010421 Brake Valve, Chassis Wiring Harness, W/ Hydraulic Trailer Brake (120005 - ) ST963797 Rear Brake Oil Lines ST959057 Brake Valve, IVT™, W/ Secondary Brake, W/O Air Trailer Brake, W/O Hydraulic Trailer Brake, W/O Front Axle Brakes ST962240 Brake Valve, PST, W/O Secondary Brake, W/ Hydraulic Trailer Brake ( - 120004) ST972349 Hydraulic Trailer Brake Kit, (For Region 2 and Region 4)