GM04 3381 30 N S RETAINER K T1 K T2 31 N S O RING K T1 I IT2 32 N S ROD ASM AIR VALVE PUSH K T1 33 N S PISTON POWER KIT I L SERVICE KITS A KIT 1 4 901 BOOSTER P B INCL ITEMS 1 33 91 C JM4 EXC J1F 1 18016259 4 901 BOOSTER P B INCL ITEMS 1 33 91 C JM4 J 1 F 1 18018033 4 901 BOOSTER P B INCL ITEMS 1 33 92 93 C JM4 EXC T2F 1 18016259 4 901 BOOSTER P B INCL ITEMS 1 33 92 93 C JM4 T2F I 1 18018033 2 4 898 BOOSTER KIT P B REPAIR NCL ITEMS 2 4 7 91 93 C 1 18014494 8 14 16 18 20 22 27 31 RPO DEFINITIONS JM4 BRAKE SYSTEM POWER FRONT DISC REAR DRUM ANTI LOCK CAST IRON J I F BRAKE SPECIAL EXPORT T2F BRAKE PROVISIONS SPECIAL J I I I L 1992 GENERAL MOTORS SERVICE PARTS OPERATIONS BU CK 44C 8 92 4 149 4 000 GROUP