| Item | Part No. | Part Name | Qty | Serial No. |
| 23S-60-45800 | STEERING UNIT | 53001-@ | ||
| 419-64-25330 | CONTROL ASS'Y | 53001-53111 | ||
| 1 | \6\ | HOUSING | 53001-53111 | |
| 2 | \6\ | SPOOL | 53001-53111 | |
| 3 | \6\ | SLEEVE | 53001-53111 | |
| 4 | 417-64-15110 | SPRING | 53001-@ | |
| 5 | 416-64-15190 | SPRING | 53001-@ | |
| 6 | 416-64-15410 | PIN | 53001-@ | |
| 7 | 416-64-15470 | RETAINER | 53001-53111 | |
| 8 | 416-64-15460 | BALL | 53001-53111 | |
| 9 | 416-64-15440 | SEAT | 53001-53111 | |
| 10 | 11T-60-12510 | O-RING (K1) | 53001-53111 | |
| 11 | 205-62-74580 | O-RING (K1) | 53001-53111 | |
| 12 | 416-64-15420 | SCREW | 53001-53111 | |
| 13 | 416-64-15160 | PLATE,SPACER | 53001-@ | |
| 14 | 416-64-15170 | DRIVE | 53001-@ | |
| 15 | 417-64-25110 | GEROTOR | 53001-@ | |
| 16 | 416-64-15150 | SPACER | 53001-@ | |
| 17 | 416-64-15130 | CAP,END | 53001-@ | |
| 18 | 416-64-15520 | O-RING (K1) | 53001-53111 | |
| 19 | 416-64-15120 | SCREW | 53001-53111 | |
| 416-64-15480 | BEARING ASS'Y | 53001-@ | ||
| 20 | 416-64-15490 | RACE,BEARING (K2) | 53001-@ | |
| 21 | 416-64-15510 | NEEDLE (K2) | 53001-@ | |
| 22 | 419-64-25210 | SEAL (K1) | 53001-@ | |
| 23 | 416-64-15540 | BUSHING | 53001-@ | |
| 24 | 416-64-15560 | O-RING (K1) | 53001-@ | |
| 25 | 416-64-15550 | SEAL,DUST (K1) | 53001-@ | |
| 26 | 416-64-15530 | RING | 53001-@ | |
| 27 | 23S-60-45130 | VALVE,CHECK | 53001-@ | |
| 28 | 415-62-11560 | O-RING | 53001-@ | |
| SERVICE KIT | ||||
| K1 | 416-64-15500 | SERVICE KIT,STEERING VALVE | 53001-53111 | |
| K2 | 416-64-15480 | BEARING ASS'Y | 53001-@ |