| Item | Part No. | Part Name | Qty | Serial No. |
| 20N-57-21100 | SEAT ASS'Y | 4501- | ||
| 1 | 20N-57-21110 | SEAT | 4501- | |
| 2 | 20R-57-21120 | SEAT,BACK | 4501- | |
| 3 | 20R-57-21130 | BRACKET | 4501- | |
| 4 | 01010-30612 | BOLT | 4501- | |
| 5 | 01602-00619 | WASHER,SPRING | 4501- | |
| 6 | 20R-57-11170 | PIN | 4501- | |
| 7 | 04052-01038 | PIN,SNAP | 4501- | |
| 8 | 201-57-11161 | CUSHION,ARM | 4501- | |
| 9 | 01010-30835 | BOLT | 4501- | |
| 10 | 01602-00825 | WASHER,SPRING | 4501- | |
| 11 | 01643-00823 | WASHER | 4501- |