Parts list: № Number Qty Name Options 1 AL157144 1 Pneumatic Trailer Brake Kit (WITH HYDRAULIC CAB SUSPENSION (HCS)) (ORD W/ L156143) , FI 1 AL157144 1 Pneumatic Trailer Brake Kit (W/O HYDRAULIC CAB SUSPENSION (HCS)) (ORD W/ AL79740) , FI Next page: ST179841 HYDR.TRAILER BRAKE - FIELD INSTALLATION KIT ST179842 AIR COMPRESSOR ASSY., AIR BRAKES ST179839 HYDR. TRAILER BRAKE, OIL LINES (WITH CAB, W/O AUTOTRAC) ST179859 TRAILER AIR BRAKE (2-LINE SYSTEM) - FIELD INSTALLATION KIT ST179850 HITCH COUPLERS FOR TRAILER AIR BRAKE ST179857 TRAILER AIR BRAKE LINES (2-LINE PLUS 1-LINE SYSTEM) FOR TRACTORS WITH FRONT WHEEL BRAKES ST179856 TRAILER AIR BRAKE LINES (2-LINE SYSTEM) FOR TRACTORS WITH FRONT WHEEL BRAKES ST179852 CONTROL LINES FOR TRAILER AIR BRAKE ST179853 TRAILER AIR BRAKE LINES (2-LINE SYSTEM) FOR TRACTORS W/O FRONT WHEEL BRAKES ST179848 TRAILER AIR BRAKE (2-LINE SYSTEM)