| Item | Part No. | Part Name | Qty | Serial No. |
| 120-57-31303 | SEAT ASS'Y | 1946- | ||
| 120-57-31313 | CUSHION ASS'Y | 1946- | ||
| 1 | 120-57-31322 | CUSHION | 1946- | |
| 2 | 120-57-31251 | CUSHION | 1305- | |
| 3 | 120-57-31461 | PLATE | 1305- | |
| 4 | 120-57-31241 | SPACER | 1305- | |
| 5 | 01010-51020 | BOLT | 1305- | |
| 6 | 01602-21030 | WASHER,SPRING | 1305- | |
| 7 | 01010-51020 | BOLT | 1305- | |
| 8 | 01602-21030 | WASHER,SPRING | 1305- | |
| 9 | (120-57-31332) | SUSPENSION ASS'Y,(SEE FIG.577) | 1946- | |
| 10 | 01580-11210 | NUT | 1305- | |
| 11 | 01602-21236 | WASHER,SPRING | 1305- | |
| 12 | 01643-31232 | WASHER | 1305- | |
| 13 | 142-57-11310 | REST,ARM | 1305- | |
| 14 | 01010-50816 | BOLT | 1305- | |
| 15 | 01602-20825 | WASHER,SPRING | 1305- | |
| 16 | 01642-20810 | WASHER | 1305- | |
| 17 | 142-57-12110 | BRACKET | 1305- | |
| 18 | 01010-51230 | BOLT | 1305- | |
| 19 | 01010-51225 | BOLT | 1305- | |
| 20 | 01602-21236 | WASHER,SPRING | 1305- | |
| 21 | 01643-31232 | WASHER | 1305- | |
| 22 | 09409-10000 | BELT,SEAT | 1001- | |
| 23 | 09409-20000 | BELT, TETHER | 1001- |