| |$0 | 421-S99-3450 | VALVE, ECSS | |
| 1 | 421-S99-3210 | SPRING | |
| 2 | 421-S99-3220 | PLUG | |
| 3 | 421-S99-3230 | O-RING | |
| 4 | 421-S99-3240 | O-RING | |
| 5 | 421-S99-3260 | CAP | |
| 6 | 421-S99-3270 | SOCKET HEAD BOLT | |
| 7 | 421-S99-3281 | SOLENOID VALVE | |
| 8 | 421-S99-3290 | PLUG | |
| 9 | 421-S99-3310 | ADJUST KIT | |
| 10 | 421-S99-3320 | O-RING | |
| 11 | 421-S99-3330 | PLUNGER | |
| 12 | 421-S99-3340 | SPRING | |
| 13 | 421-S99-3350 | SPRING SEAT ASSEMBLY | |
| 14 | 421-S99-3360 | PLUG ASSEMBLY | |
| 15 | 421-S99-3370 | VALVE ASSEMBLY | |
| 16 | 421-S99-3380 | SPACER | |
| 17 | 07000-B2010 | O-RING | |
| 18 | 421-S99-3390 | BACK-UP RING | |
| 19 | 421-S99-3410 | SPRING | |
| 20 | 421-S99-3420 | POPPET | |
| 21 | 421-S99-3430 | PLUG ASSEMBLY | |
| 22 | 421-S99-3440 | PLUG ASSEMBLY | |
| 23 | 421-S99-3560 | SPRING | |
| 24 | 421-S99-3570 | PLUG ASSEMBLY | |
| 25 | NSS | SPOOL |
