GM4 20 1976 81 THM350 THM250C A T INTERNAL COMPONENTS M38 M31 M33 1 SHAFT Trans Input 4 123 2 HOUSING Forward Clutch 4 169 3 SEAL Forward Clutch Piston nner 1 N S 4 SEAL Forward Clutch Piston Outer 1 N S 5 PISTON Forward Clutch 4 166 6 SEAT ASM Forward Clutch Piston W Springs 4 164 7 RING Forward Clutch Piston Return Spring Seat Retainer 4 164 8 WASHER Input Ring Gear Thrust Front 4 158 9 GEAR Input Ring 4 158 10 BUSHING Input Fling Gear 4 158 11 SPRING Forward Clutch Piston Cushion 4 164 12 PLATE Forward Clutch Drive Steel 4 163 13 PLATE Forward Clutch Pressure Steel 4 163 14 RING Forward Clutch Pressure Plate Retainer 4 167 15 PLATE Forward Clutch Driven Faced 4 163 16 WASHER Input Ring Gr Rr Thrust 4 176 17 CARRIER ASM Output 4 175 A 18 BUSHING Reaction Carrier Planet 4 176 19 GEAR Sun 4 159 20 BUSHING Sun Gear to Output Shaft 4 176 21 RING Sun Gear Drive Shell Retainer 4 176 22 SHELL Sun Gear Drive 4 175 1 23 WASHER Sun Gear Thrust 4 176 214 WASHER Sun Gear Shell Rear Thrust 4 176 25 RACE Low Reverse Overrun Clutch 4 180 26 CLUTCH Low Reverse Overrun 4 180 27 RING Low Reverse Clutch to Cam Retainer 4 180 248 RING Low Reverse Clutch Supt to Case 4 180 219 SUPPORT ASM Low Rev Clutch Part of 26 N S 310 PLATE Low Reverse Clutch Drive Faced 4 163 31 CARRIER Reaction Planet 4 175 V 322 BEARING Output Ring Gear Thrust Front 4 176 333 BEARING KIT Output Ring Gear Bearing 4 187 34 BUSHING Case to Output Shaft 4 104 3 5 BEARING Output Ring Gear Rr Thrust 4 176 315 RING Low Reverse Clutch Piston Return Spring Seat Ret 4 164 37 PLATE Low Reverse Clutch Reaction Steel 4 163 38 SPRING Low Reverse Clutch Support Retainer 4 180 39 SEAT ASM Low Reverse Clutch Piston Return W Springs 4 164 40 PISTON Low Reverse Clutch 4 166 4 l SEAL KIT Low Fleverse Clutch Piston 4 166 412 RING Output Carrier Retainer to Output Shaft 4 176 43 BUSHING Output Shaft 4 176 44 SHAFT ASM Output 4 1 75 4Ei CLIP Speedometer Drive Gear to Output Shaft 4 345 46 GEAR Speedometer Drive 4 343 NOTE 1 Included In SEAL KIT 4 166 z 1987 GENERAL lll IOTORS SERVICE PARTS OPERATIONS OLDSMOBILE 31A Til 7 87 4 69 A 4 000 GROUP