| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | 421-S99-3450 | VALVE | H50051- | |
| 1A | 421-S99-3210 | SPRING | H50051- | |
| 2 | 421-S99-3220 | PLUG | H50051- | |
| 3 | 421-S99-3230 | O-RING | H50051- | |
| 4 | 421-S99-3240 | O-RING | H50051- | |
| 5 | 421-S99-3260 | CAP | H50051- | |
| 6 | 421-S99-3270 | SOCKET HEAD BOLT | H50051- | |
| 7 | 421-S99-3281 | SOLENOID VALVE | H50051- | |
| 8 | 421-S99-3290 | PLUG | H50051- | |
| 9 | 421-S99-3310 | ADJUST KIT | H50051- | |
| 10 | 421-S99-3320 | O-RING | H50051- | |
| 11 | 421-S99-3330 | PLUNGER | H50051- | |
| 12 | 421-S99-3340 | SPRING | H50051- | |
| 13 | 421-S99-3350 | SPRING SEAT ASSEMBLY | H50051- | |
| 14 | 421-S99-3360 | PLUG ASSEMBLY | H50051- | |
| 15 | 421-S99-3370 | VALVE ASSEMBLY | H50051- | |
| 16 | 421-S99-3380 | SPACER | H50051- | |
| 17 | 07000-B2010 | O-RING | H50051- | |
| 18 | 421-S99-3390 | BACK-UP RING | H50051- | |
| 19 | 421-S99-3410 | SPRING | H50051- | |
| 20 | 421-S99-3420 | POPPET | H50051- | |
| 21 | 421-S99-3430 | PLUG ASSEMBLY | H50051- | |
| 22 | 421-S99-3440 | PLUG ASSEMBLY | H50051- | |
| 23 | 421-S99-3560 | SPRING | H50051- | |
| 24 | 421-S99-3570 | PLUG ASSEMBLY | H50051- |