| Item | Part No. | Part Name | Qty | Serial No. |
| 23C-57-51150 | SEAT ASS'Y | 12001- | ||
| 1 | AS182428 | BACK COVER KIT | 12001- | |
| 2 | AS183679 | CUSHION | 12001- | |
| 3 | AS187812 | FRAME KIT | 12001- | |
| 4 | AS180977 | SEAT COVER ASS'Y KIT | 12001- | |
| 5 | AS157154 | SEAT FOAM KIT | 12001- | |
| 6 | AS180761 | KNOB | 12001- | |
| 7 | AS188242 | ADJUSTER | 12001- | |
| 8 | AS186341 | STRAP | 12001- | |
| 9 | AS174179 | WEIGHT ADJUSTER KIT | 12001- | |
| 10 | AS174180 | STOPPER | 12001- | |
| 11 | AS174182 | DAMPER ASS'Y | 12001- | |
| 12 | AS187889 | SUSPENSION ASS'Y | 12001- | |
| 13 | AS174287 | INDICATOR | 12001- | |
| 14 | AS174285 | COVER KIT | 12001- | |
| 15 | AS165216 | ARM REST KIT,L.H. | 12001- | |
| 15 | AS166386 | ARM REST KIT,R.H. | 12001- | |
| 16 | AS187077 | LUMBER | 12001- | |
| 17 | BS169317 | HEAD REST KIT | 12001- | |
| 18 | 418-57-31121 | BRACKET | 12010- | |
| 18 | 418-57-31310 | BRACKET | 12001-12009 | |
| 19 | 01010-80825 | BOLT | 12001- | |
| 20 | 01643-30823 | WASHER | 12001- | |
| 21 | 01010-81230 | BOLT | 12001- | |
| 22 | 01643-31232 | WASHER | 12001- |