| Item | Part No. | Part Name | Qty | Serial No. |
| 421-01-A1280 | GOVERNOR ASSEMBLY, AIR | |||
| 1 | (NSS) | BODY ASSEMBLY | ||
| 2 | (NSS) | FILTER | ||
| 3 | (NSS) | PISTON ASSEMBLY | ||
| 4 | (NSS) | O-RING | ||
| 5 | (NSS) | VALVE, PRESSURE REGULATOR | ||
| 6 | (NSS) | SPRING, VALVE | ||
| 7 | (NSS) | O-RING | ||
| 8 | (NSS) | SPRING, EXHAUST STEM | ||
| 9 | (NSS) | STEM, EXHAUST | ||
| 10 | (NSS) | ADAPTER ASSEMBLY | ||
| 11 | (NSS) | RING, SNAP | ||
| 12 | (NSS) | COVER |