V TX04 1563 V 1991 1992 ST1 BRAKE BOOSTER VACUUM IW JM3 JM5 DUAL DIAPHRAGM f I I MORAI E 1 4 901 BOOSTER P B STAMPED ST INCLVITEMS 2 91 92 ST1 JM3 1 18014925 32 4 901 BOOSTER P B STAMPED YC NCL ITEMS 2 91 92 ST1 JM5 1 18014955 I I 32 2 4 906 BOOT PWR BRK BOOSTER ALSO PART OF 91 92 ST1 JM3 JM5 JM7 1 18012140 ITEM 1 KIT1 4 659 I 3 N S SILENCER 1 ST 4 N S BEARING PISTON 1 KIT1 ST 5 N S HOUSING RR 1 ST F 6 N S SILENCER PWR HEAD 1 K T3 ST 7 N S RETAINER DIAPHRAGM 1 KIT1 I ST 8 N S DIAPHRAGM PWR PISTON 1 KIT1 ST 9 N S PLATE PRIMARY SUPT 1 ST 10 N S BEARING SECONDARY PSTN 1 ST 11 N S DIVIDER HOUSING 1 ST A 12 N S DIAPHRAGM SECONDARY 1 ST 13 N S PLATE SECONDARY SUPT 1 KIT2 ST 14 N S FILTER 1 A ST 15 N S RETAINER 1 ST 16 N S O RING 1 ST 17 N S PUSH ROD ASM Q AIR VLV 1 ST 18 N S PISTON F WR 1 KIT2 ST 19 N S RING RETAIN NG 1 K T2 ST 20 N S BUMPER REACTION 1 ST 21 N S SPRING AIR VLV 1 I IT3 ST 22 N S BODY REACT ON 1 KIT2 V ST 23 N S RETAINER REACTIO N BODY 1 KIT2 KIT3 ST V 24 N S PISTON REACT ON 1 KIT2 I ST 25 N S DISC REACT ON 1 KIT1 K T2 sT I 26 N S RETAINER REACTIO N 1 KIT2 ST 27 4 924 ROD KIT VAC PWRVBRK BOOS PSTN ALSO V 91 92 ST1 JM3 JM5 JM7 1 5469384 PART OF ITEM 1 I 28 N S SPRING RETURN 1 ST V 29 N S HOUSING FRT 1 ST 30 N S GROMMET CHK VLV PART OF ITEM 31 1 ST K T1 31 4 955 VALVE KIT P B BOOS VAC CHK W GROM 91 92 ST1 JM3 JM5 JM7 1 18012017 ALSO PART OF ITEM 1 NCL ITEM 30 KIT1 Z I 32 N S SEAL FRT HOUSING 1 KIT1 ST SERVICE KITS KIT 1 4 898 REPAIR KIT P B BOOS NCL ITEMS 2 4 7 8 91 92 ST1 JM5 1 18014481 25 30 32 4 898 REPAIR KIT P B BOOS NCL ITEMS 2 4 7 8 91 92 ST1 JM3 1 18014494 25 30 32 2 4 810 V PISTON KIT P B BOOS PWR VAC INCL ITEMS 91 92 ST1 JM3 JM5 1 18014008 13 18 19 22 26 4 922 V 3 4 918 VALVE KIT AIR PWR PISTON NCL ITEMS 6 91 92 ST1 JM3 JM5 1 18014493 21 23 2 NOTE 1 PART OFITEM 1 I NOTE 2 THE AIR VALVE IS AN INTERNAL PART OF ITEM 18 POWER PISTON RPO DEFINITIONS I JM3 BRAKE BOOSTER DOUBLE D IAPHRAGM HIGH FLOW 240MM JM5 BRAKE BOOSTER DOUBLE DIAPHRAGM 2OOMM V I IM7 BRAKE BOOSTER SINGLE DIAPHRAGM 1992 GENERAL MOTORS SERVICE PARTS OPERATIONS LT TRUCK 53S I1 92 4 123 4 000 GROUP