I B4 91 TURBO HYDRA MATIC 350 375B MAINSHAFT FORWARD CLUTCH I LOW REVERSE CLUTCH OUTPUT SHAFT PARTS Key Part Name Group No I SHAFT Trans Input 4 123 2 HOUSING Forward Clutch 4 169 3 SEAL Forward Clutch Piston Inner A N S 4 SEAL Forward Clutch Piston Outer A N S 5 PISTON Forward Clutch 4 166 6 SPRING Forward Clutch Piston Return 4 164 I 7 SEAT Forward Clutch Piston Return Spring 4 164 8 RING Forward Clutch Piston Return Spring Seat Retainer 4 164 9 WASHER Input Ring Gear Thrust Front 4 176 10 GEAR Input Ring 4 158 I I 11 BUSHING Input Ring Gear 4 176 12 SPRING Forward Clutch Piston Cushion 4 163 T 13 PLATE Forward Clutch Drive Steel 4 163 I 14 RING Forward Clutch Pressure Plate Retainer 4 167 15 PLATE Forward Clutch Driven Faced 4 163 16 PLATE Forward Clutch Pressure 4 163 17 WASHER Input Gear Supt Rear to Output Carrier 4 158 I 18 CARRIER Output Part 01 21 N S 19 BEARING Sun Gear to Output Carrier Part of 21 N S 20 RACE Sun Gear to Output Carrier Part of 21 N S 21 CARRIER ASM Output 4 175 I 22 BUSHING Sun Gear to Output Shaft 4 176 l 23 SHELL Sun Gear Drive 4 175 24 WASHER Sun Gear Thrust 4 176 25 RING Sun Gear Drive Shell Retainer 4 176 26 WASHER Sun Gear Shell Rear Thrust 4 176 I 27 RACE Low 8 Reverse Overrun Clutch Inner 4 180 28 CLUTCH Low 8 Reverse 4 180 29 RING Low 8 Reverse Clutch to Cam Retainer 4 180 t 30 CAM Low 8 Reverse Overrun Clutch Part of 34 N S l 31 GEAR Sun 4 159 32 RING Sun Gear Drive SheII Retainer 4 176 1 33 RING Low 8 Reverse Clutch Supt to Case 4 180 34 SUPPORT Low 8 Reverse Clutch Incl 3 0 4 162 35 PLATE Reverse Clutch Drive 4 163 36 CARRIER Reaction Planet 4 175 37 WASHER Output Ring Gear Thrust Front 4 176 38 GEAR Output Ring 4 187 I 39 BUSHING Case to Output Shaft 4 104 40 BEARING Output Ring Gear Supt to Case 4 176 I I 41 RING Low 8 Reverse Clutch Piston Return Spring Seat 4 164 42 PLATE Low 8 Reverse Clutch Reaction 4 163 43 SEAT Low 8 Reverse Clutch Piston Return Spring 4 228 l 44 SPRING Low 8 Reverse Clutch Piston Return 4 164 45 PISTON Low 8 Reverse Clutch 4 166 46 SEAL Low 8 Reverse Clutch Piston Outer Part of 49 N S 47 SEA L Low 8 Reverse Clutch Piston Inner Part of 49 N S 48 RING Output Carrier Retainer to Output Shaft 4 176 49 SEAL PKG Low 8 Reverse Clutch Piston 4 166 50 BUSHING Output Shaft 4 176 51 SHAFT ASM Output includes 38 4 175 52 CLIP Speedometer Drive Gear to Output Shaft 4 345 53 GEAR Speedometer Drive 4 343 S 54 SPRING Low 8 Reverse Clutch Support Retainer 4 180 lr 55 BUSHING Reaction Carrier Planet 4 176 A NOTE INCLUDED IN SEAL PKG 4 166 j GM PARTS DIVISION GENERAL MOTORS CORPORATION BUICK 4OA 4 33 s 4 000 GROUP