| Item | Part No. | Part Name | Qty | Serial No. |
| 421-57-21020 | OPERATOR'S SEAT A. | 50151- | ||
| 421-57-21510 | SEAT ASS'Y | 50151- | ||
| BS162663 | UPPER ASS'Y | 50151- | ||
| 1 | \6\ | BACK COVER KIT | 50151- | |
| 2 | \6\ | BACK FOAM KIT | 50151- | |
| 3 | \6\ | SEAT COVER KIT | 50151- | |
| 4 | \6\ | SEAT FOAM KIT | 50151- | |
| 5 | BS162032 | KIT | 50151- | |
| 6 | BS162056 | SPRING KIT | 50151- | |
| 7 | BS163368 | LATCH KIT | 50151- | |
| 8 | BS164188 | HANDLE KIT | 50151- | |
| 9 | BS163369 | HEIGHT RISER KIT | 50151- | |
| 10 | BS157230 | SUSPENSION ASS'Y | 50151- | |
| 11 | BS157228 | DAMPER ASS'Y KIT | 50151- | |
| 12 | BS156737 | WEIGHT ADJUSTER KIT | 50151- | |
| 13 | BS156717 | STOP KIT | 50151- | |
| 14 | BS156738 | BEARING KIT | 50151- | |
| 15 | BS162035 | ADJUSTER KIT | 50151- | |
| 16 | BS152879 | HANDLE | 50151- | |
| 17 | BS151185 | HEAD REST KIT | 50151- | |
| 18 | BS165216 | ARM REST KIT | 50151- | |
| 19 | BS166386 | ARM REST KIT | 50151- |