| Item | Part No. | Part Name | Qty | Serial No. |
| 56B-57-31152 | Operator's Seat Assembly | 3829-3929 | ||
| 56B-57-31151 | Operator's Seat Assembly, With Seat Heater | 3736-3828 | ||
| 56B-57-31150 | Operator's Seat Assembly, With Seat Heater | 3001-3735 | ||
| 1 | GJ1305128 | Cushion | 3829-3929 | |
| 1 | GJ1244196 | Cushion | 3001-3828 | |
| 2 | GJ1305135 | Cushion | 3829-3929 | |
| 2 | GJ1244197 | Cushion | 3001-3828 | |
| 3 | GJ1233312 | Headrest | 3001-3929 | |
| 4 | GJ136951 | Guide | 3001-3929 | |
| 5 | GJ140678 | Support Kit | 3001-3929 | |
| 6 | GJ1091082 | Actuator | 3001-3929 | |
| 7 | GJ140679 | Handle Kit | 3001-3929 | |
| 8 | GJ1171885 | Actuator, Backrest | 3001-3929 | |
| 9 | GJ1164814 | Handle | 3001-3929 | |
| 10 | GJ1171886 | Cable | 3001-3929 | |
| 11 | GJ1019329 | 3001-3929 | ||
| 12 | GJ1236966 | Frame, Seat Pan | 3001-3929 | |
| 13 | GJ1091214 | Guide Kit | 3001-3929 | |
| 14 | GJ1236974 | Frame, Backrest | 3001-3929 | |
| 15 | GJ1091397 | Adjuster | 3001-3929 | |
| 16 | GJ1091389 | Actuator | 3001-3929 | |
| 17 | GJ139257 | Bracket | 3001-3929 | |
| 18 | GJ1091503 | Adjuster | 3001-3929 | |
| 19 | GJ139246 | Lever | 3001-3929 | |
| 20 | GJ1091428 | Bracket, Resilient Sheet | 3001-3929 | |
| 21 | GJ139254 | Bracket | 3001-3929 | |
| 22 | GJ139521 | Cover | 3001-3929 | |
| 23 | GJ1236972 | Mounting Parts | 3001-3929 | |
| 24 | GJ1233212 | Adjuster | 3001-3929 | |
| 25 | GJ1159689 | Wiring Harness | 3001-3929 | |
| 26 | GJ1023155 | Arm Rest | 3001-3929 | |
| 27 | GJ1023156 | Arm Rest | 3001-3929 | |
| 28 | GJ1233214 | Plate | 3001-3929 | |
| 29 | GJ1088780 | Cover | 3001-3929 | |
| 30 | GJ1088782 | Cover | 3001-3929 | |
| 31 | GJ1173463 | Switch, Heater | 3001-3929 |
