| Item | Part No. | Part Name | Qty | Serial No. |
| 421-07-23300 | FILTER BOX ASS'Y | 51001-51999 | ||
| 1 | 421-07-23310 | BOX ASS'Y | 51001-51999 | |
| 2 | 421-07-23390 | SHEET | 51001-51999 | |
| 3 | 421-07-23410 | SHEET | 51001-51999 | |
| 4 | 421-07-23420 | SHEET | 51001-51999 | |
| 5 | 421-07-23430 | SHEET | 51001-51999 | |
| 6 | 421-07-12312 | FILTER | 51001-@ | |
| 7 | 421-07-23440 | BRACKET | 51001-@ | |
| 421-07-23450 | SHEET | 51001-@ | ||
| 8 | 01540-20840 | NUT,WING | 51001-51999 | |
| 9 | 01643-30823 | WASHER | 51001-51999 | |
| 10 | 01435-01025 | BOLT | 51001-@ | |
| 11 | 01435-01025 | BOLT | 51001-@ | |
| 12 | 421-09-21380 | GROMMET,BRACKET | 51001-@ |