| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | 6610-21-1330 | GASKET (K4) | 23020- | |
| 2 | 6645-21-1311 | PLATE,REAR COVER | 24790- | |
| \3\6645-21-1310 | PLATE,REAR COVER | 23020-24789 | ||
| (6645-21-1311{02030-30632)} | ||||
| 3 | 02030-20625 | BOLT | 23020- | |
| 4 | 02030-20632 | BOLT | 24790- | |
| 02030-20638 | BOLT | 23020-24789 | ||
| 5 | 02310-11224 | WASHER,SPRING | 23020- | |
| 6 | 6610-21-1350 | GASKET (K4) | 23020- | |
| 7 | 6610-21-1340 | RETAINER | 23020- | |
| 8 | 07000-06240 | O-RING (K4) | 23020- | |
| 9 | 02030-20644 | BOLT | 23020- | |
| 10 | 02310-11224 | WASHER,SPRING | 23020- | |
| 11 | 02030-20416 | BOLT | 23020- | |
| 12 | 02310-10916 | WASHER,SPRING | 23020- | |
| 13 | 02300-10920 | WASHER | 23020- | |
| 14 | 6610-21-1321 | SEAL¤ REAR (K4) | 23020- |