| Item | Part No. | Part Name | Qty | Serial No. |
| 421-57-21520 | SEAT ASS'Y | 55167-@ | ||
| \0\421-57-21511 | SEAT ASS'Y | 53001-55166 | ||
| BS170254 | UPPER ASS'Y | 53001-@ | ||
| 1 | \6\ | BACK COVER KIT | 53001-@ | |
| 2 | \6\ | BACK FOAM KIT | 53001-@ | |
| 3 | \6\ | SEAT COVER KIT | 53001-@ | |
| 4 | \6\ | SEAT FOAM KIT | 53001-@ | |
| 5 | \6\ | FRAME KIT | 53001-@ | |
| 6 | BS162056 | SPRING KIT | 53001-@ | |
| 7 | BS157157 | LATCH KIT | 53001-@ | |
| 8 | BS166280 | HANDLE KIT | 53001-@ | |
| 9 | BS163369 | HEIGHT RISER KIT | 53001-55166 | |
| 10 | BS157230 | SUSPENSION ASS'Y | 53001-@ | |
| 11 | BS157228 | DAMPER ASS'Y KIT | 53001-@ | |
| 12 | BS156737 | WEIGHT ADJUSTER KIT | 53001-@ | |
| 13 | BS156717 | STOP KIT | 53001-@ | |
| 14 | BS156738 | BEARING KIT | 53001-@ | |
| 15 | BS166568 | ADJUSTER KIT | 53001-@ | |
| 16 | BS161796 | HANDLE | 53001-@ | |
| 17 | BS151185 | HEAD REST KIT | 53001-@ | |
| 18 | BS165216 | ARM REST KIT,L.H. | 53001-@ | |
| 19 | BS166386 | ARM REST KIT,R.H. | 53001-@ | |
| 20 | 423-960-2111 | BRACKET,L.H. | 53001-@ | |
| 21 | 423-960-2121 | BRACKET,R.H. | 53001-@ | |
| 22 | 01252-40820 | BOLT | 53001-@ | |
| 23 | 01584-00806 | NUT | 53001-@ | |
| 24 | 01435-01225 | BOLT | 53001-@ |