| Item | Part No. | Part Name | Qty | Serial No. |
| 421-U12-3102 | Pre-cleaner Assembly | 91300-@ | ||
| 421-U12-3101 | Pre-cleaner Assembly | 90561-91299 | ||
| 1 | 421-U12-3120 | Hood | 90216-@ | |
| 2 | 421-U12-3330 | Body | 90561-@ | |
| 3 | 421-U12-3140 | Clamp | 90216-@ | |
| 4 | 421-U12-3151 | Rotor | 91300-@ | |
| 4 | 421-U12-3150 | Rotor | 90216-91299 | |
| 5 | 421-U12-3160 | Bolt | 90216-@ | |
| 6 | 421-U12-3170 | Ring, Snap | 90216-@ | |
| 7 | 421-U12-3181 | Bearing, Ball | 90561-@ | |
| 8 | 421-U12-3190 | Bushing | 90216-@ | |
| 9 | 418-U12-3410 | Bushing | 90561-@ | |
| 10 | 418-U12-3420 | Shield | 90561-@ | |
| 11 | 421-U12-3230 | Nut | 90216-@ | |
| 12 | 421-U12-3240 | Bolt | 90216-@ | |
| 13 | 421-U12-3250 | Nut | 90216-@ | |
| 14 | 421-U12-3261 | Plug, Plastic | 91300-@ | |
| 14 | 421-U12-3260 | Plug, Plastic | 90216-91299 | |
| 15 | 424-U12-4120 | Cover | 90216-@ | |
| 16 | 424-U12-4130 | Seal | 90216-@ | |
| 17 | 01010-81020 | Bolt | 90216-@ | |
| 18 | 01643-31032 | Washer | 90216-@ |