| Item | Part No. | Part Name | Qty | Serial No. |
| 20G-61-31121 | Cylinder Assembly | H55951- | ||
| 1 | 20K-62-38140 | Cylinder | H55951- | |
| 2 | 20K-62-38120 | Piston Rod | H55951- | |
| 3 | 20E-62-K6170 | Piston | H55951- | |
| 4 | 20K-62-38130 | Guide | H55951- | |
| 5 | 20K-61-31520 | Spool | H55951- | |
| 6 | 20K-61-31510 | Seat | H55951- | |
| 7 | 20K-61-31490 | Seat | H55951- | |
| 8 | 20K-61-31480 | Poppet | H55951- | |
| 9 | 20K-61-31470 | Bolt | H55951- | |
| 10 | 20K-61-31460 | Plug | H55951- | |
| 11 | 20K-61-31450 | Plug | H55951- | |
| 12 | 20K-61-31260 | Spring | H55951- | |
| 13 | 20K-61-31440 | Wiper, (Kit : K02) | H55951- | |
| 14 | 20K-61-31430 | O-Ring, (Kit : K02) | H55951- | |
| 15 | 20K-61-31420 | Ring, (Kit : K02) | H55951- | |
| 16 | 20E-62-K6580 | O-Ring, (Kit : K02) | H55951- | |
| 17 | 20E-62-K6590 | Back-Up Ring, (Kit : K02) | H55951- | |
| 18 | 20E-62-K6610 | O-Ring, (Kit : K02) | H55951- | |
| 19 | 20E-62-K6530 | Ring, (Kit : K02) | H55951- | |
| 20 | 20E-62-K6540 | O-Ring, (Kit : K02) | H55951- | |
| 21 | 20E-62-K6550 | Back-Up Ring, (Kit : K02) | H55951- | |
| 22 | 20E-62-K6560 | Piston Ring, (Kit : K02) | H55951- | |
| 23 | 20K-61-31330 | O-Ring, (Kit : K02) | H55951- | |
| 24 | 20K-61-31320 | Ring, (Kit : K02) | H55951- | |
| 25 | 20K-61-31310 | O-Ring, (Kit : K02) | H55951- | |
| 26 | 20K-61-31290 | Ring, (Kit : K02) | H55951- | |
| 27 | 20K-61-31280 | O-Ring, (Kit : K02) | H55951- | |
| 28 | 20K-61-31270 | Spring | H55951- | |
| 29 | 20K-61-31250 | Nut | H55951- | |
| 30 | 20K-61-31240 | Screw | H55951- | |
| 31 | 20K-61-31230 | Bearing | H55951- | |
| 32 | 20K-61-31220 | Nipple | H55951- |
