| Item | Part No. | Part Name | Qty | Serial No. |
| 20Y-977-A070 | ASSEMBLY, FRESH AIR FILTER | |||
| 1 | 20Y-977-A480 | HOUSING, FILTER | ||
| 2 | 20Y-977-A790 | HOSE ADAPTER | ||
| 3 | 425-963-A850 | BOLT, 10-32 X 1/2 IN | ||
| 4 | 425-963-AC40 | FILTER, FRESH AIR | ||
| 5 | 20Y-977-A430 | FOAM, CAB SEAL | ||
| 6 | 423-963-A420 | KNOB, 1/4 IN. FEMALE | ||
| 7 | 425-963-A570 | SPACER | ||
| 8 | 425-963-A510 | BRACKET, FILTER HOUSING | ||
| 9 | 425-963-A750 | CLIP, HOSE |