| Item | Part No. | Part Name | Qty | Serial No. |
| 12F-57-11111 | SEAT ASS'Y | 28858- | ||
| 1 | 12F-57-11121 | CUSHION | 28858- | |
| 2 | 12F-57-11221 | CUSHION | 28858- | |
| 3 | 12F-57-11230 | PLATE | 28858- | |
| 4 | 12F-57-11240 | PLATE | 28858- | |
| 5 | 01010-31020 | BOLT | 28858- | |
| 6 | 01602-01030 | WASHER | 28858- | |
| 7 | 141-57-35112 | PLATE | 28858- | |
| 8 | 01010-31225 | BOLT | 28858- | |
| 9 | 01602-01236 | WASHER | 28858- | |
| 10 | 01580-01210 | NUT | 28858- | |
| 11 | 01602-01236 | WASHER | 28858- | |
| 12 | 131-57-42340 | LOCK | 28858- | |
| 13 | 131-57-42330 | ROD | 28858- | |
| 14 | 04050-02012 | PIN | 28858- | |
| 15 | 01641-20812 | WASHER | 28858- | |
| 16 | 135-57-12230 | SPRING | 28858- | |
| 17 | 135-43-16270 | PIN | 28858- | |
| 18 | 04050-03015 | PIN | 28858- | |
| 19 | 141-57-35210 | FRAME | .- | |
| 141-57-35150 | FRAME | 28858-. | ||
| 20 | 08037-01008 | GROMMET | 28858- | |
| 21 | 01010-31020 | BOLT | 28858- | |
| 22 | 01602-01236 | WASHER | 28858- | |
| 23 | 144-57-11140 | REST,ARM¤ L.H. | 28858- | |
| 24 | 144-57-11150 | REST,ARM¤ R.H. | 28854- | |
| 25 | 01010-30816 | BOLT | 28854- | |
| 26 | 01602-00825 | WASHER | 28858- | |
| 27 | 01642-20810 | WASHER | 28858- | |
| 28 | 131-57-42310 | BRACKET | 28858- | |
| 29 | 01010-31020 | BOLT | 28858- |