| Item | Part No. | Part Name | Qty | Serial No. |
| 17A-57-21112 | OPERATOR'S SEAT A. | B20287- | ||
| 17A-57-21122 | SEAT ASS'Y | B20287- | ||
| 1 | AS163576 | FRAME ASS'Y | B20287- | |
| 2 | AS165698 | BACK COVER ASS'Y KIT | B20287- | |
| 3 | AS160167 | BACK FOAM KIT | B20287- | |
| 4 | AS165699 | SEAT COVER ASS'Y KIT | B20287- | |
| 5 | AS157154 | SEAT FOAM KIT | B20287- | |
| 6 | AS156714 | HEIGHT RISER KIT | B20287- | |
| 7 | AS156713 | HI RISER SPRING KIT | B20287- | |
| 8 | AS157157 | HI RISER LATCH KIT | B20287- | |
| 9 | AS157240 | SLIDE RAIL MOUNT KIT | B20287- | |
| 10 | AS156717 | UP STOP/BUMP STOP K. | B20287- | |
| 11 | AS157230 | SUSPENSION ASS'Y | B20287- | |
| 12 | AS164183 | BRACKET KIT,(NOT SHOWN) | B20287- | |
| 13 | AS156738 | BEARING KIT,(NOT SHOWN) | B20287- | |
| 14 | AS163577 | SUSPENSION COVER KIT | B20287- | |
| 15 | AS157228 | DAMPER ASS'Y KIT | B20287- | |
| 16 | AS156737 | WEIGHT ADJUSTER KIT | B20287- |