| Item | Part No. | Part Name | Qty | Serial No. |
| 421-64-15500 | VALVE ASSEMBLY, STOP | |||
| 1 | (NSS) | BODY | ||
| 2 | (NSS) | SPOOL | ||
| 3 | 421-64-15530 | POPPET | ||
| 4 | 421-64-15540 | SPRING | ||
| 5 | 421-64-15550 | O-RING | ||
| 6 | 421-64-15560 | SPOOL, END | ||
| 7 | 421-64-15570 | SPRING | ||
| 8 | 421-64-15580 | O-RING | ||
| 9 | 421-64-15590 | PLUG | ||
| 10 | 421-64-15910 | BOOT | ||
| 11 | 421-64-15920 | SEAL | ||
| 12 | 421-64-15930 | WIPER | ||
| 13 | 421-64-15940 | COVER | ||
| 14 | 421-64-15950 | BOLT, SOCKET HEAD | ||
| N/I | 01435-00860 | BOLT | ||
| F1 - INCLUDED IN SERVICE KIT 421-64-05100. | ||||