| Item | Part No. | Part Name | Qty | Serial No. |
| 421-U12-3102 | Pre-cleaner Assembly | 22061- | ||
| 421-U12-3101 | Pre-cleaner Assembly | 22001-22060 | ||
| 1 | Hood | 22001- | ||
| 2 | 421-U12-3330 | Body | 22001- | |
| 3 | 421-U12-3140 | Clamp | 22001- | |
| 4 | 421-U12-3151 | Rotor | 22061- | |
| 4 | 421-U12-3150 | Rotor | 22001-22060 | |
| 5 | 421-U12-3160 | Bolt | 22001- | |
| 6 | 421-U12-3170 | Ring, Snap | 22001- | |
| 7 | 421-U12-3181 | Bearing, Ball | 22001- | |
| 8 | 421-U12-3190 | Bushing | 22001- | |
| 9 | 418-U12-3410 | Bushing | 22001- | |
| 10 | 418-U12-3420 | Shield | 22001- | |
| 11 | 421-U12-3230 | Nut | 22001- | |
| 12 | 421-U12-3240 | Bolt | 22001- | |
| 13 | 421-U12-3250 | Nut | 22001- | |
| 14 | 421-U12-3261 | Plug, Plastic | 22061- | |
| 14 | 421-U12-3260 | Plug, Plastic | 22001-22060 | |
| 15 | 418-U12-3470 | Washer, Flat | 22061- |