| Item | Part No. | Part Name | Qty | Serial No. |
| 20Y-57-31100 | SEAT ASSEMBLY | |||
| AS186826 | SEAT | |||
| 1 | AS182431 | SEAT | ||
| 2 | AS160430 | FRAME | ||
| 3 | AS182432 | SEAT | ||
| 4 | AS160432 | SEAT | ||
| 5 | AS182326 | REST | ||
| 6 | AS170691 | FRAME | ||
| 7 | AS162032 | CABLE KIT | ||
| 8 | AS186830 | HEIGHT RISER KIT | ||
| 9 | AS162056 | SPRING KIT | ||
| 10 | AS156718 | DAMPER ASSEMBLY | ||
| 11 | AS186831 | SUSPENSION ASSEMBLY | ||
| 12 | AS156717 | UP STOP/BUMP STOP K. | ||
| 13 | AS156737 | WEIGHT ADJUSTER KIT | ||
| 14 | AS156738 | BEARING KIT | ||
| 15 | AS186832 | COVER | ||
| 16 | AS186833 | HANDLE KIT | ||
| 17 | AS186834 | ARM REST | ||
| 18 | AS186835 | ARM REST | ||
| 19 | AS186836 | RAIL | ||
| 20 | AS172287 | PLATE |