GM04 179 1985 1986 B POWERMASTER I MORAINE 1 4 883 SWITCH PRESSURE 1 2 V 18018141 2 N S O RING 1 2 3 4 847 ACCUMULATOR KIT BRK MAST CYL 18014978 4 N S O RING 1 3 I 5 N S NUT 1 8 N S WASHER 1 I 7 N S GROMMET 1 V I 8 4 847 PUMP MOTOR KIT 1 8011279 9 N S CLAMP HOSE 1 I 10 4 880 HOSE KIT PWR BRK SUMP 18011403 I 11 4 845 HOSE M CYL PRESS I 17980487 12 N S TUBE W NUT 1 I I 13 N S BOLT 1 I I 14 N S BRACKET ASM 1 15 N S BRACKET PWR BRK MTG PKG 18 4 858 PUSHROD W RETAINER 18011412 17 4 859 BOOT KIT PWR BRK BOOS PUSH ROD 18011398 18 N S RETAINER 1 19 N S GUIDE PISTON 1 20 N S O RING 1 Q L I T I 21 N S O RING 1 22 N S BODY GROUP REACTION 1 T 23 N S PISTON REACTlON 1 V 24 N S DISC REACTION I I T 25 N S POWER PISTON ASM 1 28 N S PISTON ASM PR MARY 1 27 N S SEAL SECONDARY 1 I 28 N S RETAINER SPRING 1 A 29 N S SEAL PRIMARY 1 30 N S PISTON SECONDARY 1 4 31 N S SPRING 1 32 4 851 COVER W DIAPHRAGM 1985 18011388 4 851 COVER W D APHRAGM 1986 18013293 33 N S RESERVOIR 1 4 34 N S GROMMET RESERVO R 1 I 35 N S GROMMET RESERVO R 1 38 N S SEAT W SEAL VALVE 1 T 37 N S POPPET 1 38 N S SPRING 1 I 39 N S BODY POWERMASTER 1 NOTE 1 GROUP 4 650 CYLINDER POWERMASTER BOOST INCLS 1 THRU 39 NOTE 2 GROUP 4 663 SWITCH PRESSURE INCLS 1 2 I NOTE 3 GROUP 4 647 ACCUMULATOR PKG INCLS 3 4 I 1 NOTE 4 CONFIGURATION WILL VARY PER APPLICATION 1991 GENERAL MOTORS SERVICE PARTS OPERAT 0NS BUICK 44W 6 9 1 4 127 I 4 000 GROUP