| Item | Part No. | Part Name | Qty | Serial No. |
| 20G-61-31121 | CYLINDER ASSEMBLY | H55051- | ||
| 1 | 20K-62-38140 | CYLINDER | H55051- | |
| 2 | 20K-62-38120 | PISTON ROD | H55051- | |
| 3 | 20E-62-K6170 | PISTON | H55051- | |
| 4 | 20K-62-38130 | GUIDE | H55051- | |
| 5 | 20K-61-31520 | SPOOL | H55051- | |
| 6 | 20K-61-31510 | SEAT | H55051- | |
| 7 | 20K-61-31490 | SEAT | H55051- | |
| 8 | 20K-61-31480 | POPPET | H55051- | |
| 9 | 20K-61-31470 | BOLT | H55051- | |
| 10 | 20K-61-31460 | PLUG | H55051- | |
| 11 | 20K-61-31450 | PLUG | H55051- | |
| 12 | 20K-61-31260 | SPRING | H55051- | |
| 13 | 20K-61-31440 | WIPER (KIT) | H55051- | |
| 14 | 20K-61-31430 | O-RING (KIT) | H55051- | |
| 15 | 20K-61-31420 | RING (KIT) | H55051- | |
| 16 | 20E-62-K6580 | O-RING (KIT) | H55051- | |
| 17 | 20E-62-K6590 | BACK-UP RING (KIT) | H55051- | |
| 18 | 20E-62-K6610 | O-RING (KIT) | H55051- | |
| 19 | 20E-62-K6530 | RING (KIT) | H55051- | |
| 20 | 20E-62-K6540 | O-RING (KIT) | H55051- | |
| 21 | 20E-62-K6550 | BACK-UP RING (KIT) | H55051- | |
| 22 | 20E-62-K6560 | PISTON RING (KIT) | H55051- | |
| 23 | 20K-61-31330 | O-RING (KIT) | H55051- | |
| 24 | 20K-61-31320 | RING (KIT) | H55051- | |
| 25 | 20K-61-31310 | O-RING (KIT) | H55051- | |
| 26 | 20K-61-31290 | RING (KIT) | H55051- | |
| 27 | 20K-61-31280 | O-RING (KIT) | H55051- | |
| 28 | 20K-61-31270 | SPRING | H55051- | |
| 29 | 20K-61-31250 | NUT | H55051- | |
| 30 | 20K-61-31240 | SCREW | H55051- | |
| 31 | 20K-61-31230 | BEARING | H55051- | |
| 32 | 20K-61-31220 | NIPPLE | H55051- | |
| KIT | 20G-61-H0P01 | SEAL KIT | H55051- |