| Item | Part No. | Part Name | Qty | Serial No. |
| 23D-63-12300 | CYLINDER ASS'Y | 4001-4027 | ||
| 1 | 23D-63-12340 | CYLINDER | 4001-4027 | |
| 2 | 707-29-60911 | HEAD,CYLINDER | 4001-4027 | |
| 3 | 07177-04025 | BUSHING | 4001-@ | |
| 4 | 707-51-40210 | PACKING,ROD | 4001-@ | |
| 5 | 198-63-75190 | SEAL,DUST | 4001-@ | |
| 6 | 07179-00059 | RING,SNAP | 4001-4027 | |
| 7 | 07000-12055 | O-RING | 4001-@ | |
| 8 | 07001-02055 | RING,BACK-UP | 4001-4027 | |
| 9 | 07000-02060 | O-RING | 4001-@ | |
| 10 | 23D-63-12320 | ROD,PISTON | 4001-4027 | |
| 11 | 07138-00760 | CAP,ROD | 4001-@ | |
| 12 | 07020-00900 | FITTING,GREASE | 4001-@ | |
| 13 | 07141-00070 | SEAL,DUST | 4001-@ | |
| 14 | 07139-00702 | SHIM¤ 0.2MM | 4001-4027 | |
| 07139-00705 | SHIM¤ 0.5MM | 4001-4027 | ||
| 15 | 01010-51665 | BOLT | 4001-@ | |
| 16 | 01580-11613 | NUT | 4001-@ | |
| 17 | 01602-21648 | WASHER,SPRING | 4001-4027 | |
| 18 | 707-36-60911 | PISTON | 4001-4027 | |
| 19 | 07155-00615 | RING,WEAR | 4001-4027 | |
| 20 | 07161-10060 | RING,PISTON | 4001-@ | |
| 21 | 07165-12022 | NUT | 4001-@ |