| Item | Part No. | Part Name | Qty | Serial No. |
| 6222-21-1501 | CYLINDER BLOCK ASS'Y | 21503-21531 | ||
| 1 | 07043-70108 | PLUG | 21503-21531 | |
| 2 | 07040-11007 | PLUG | 21503-21531 | |
| 3 | 07005-01012 | GASKET (K2) | 21503-21531 | |
| 4 | 07043-70211 | PLUG | 21503-21531 | |
| 5 | 07040-11209 | PLUG | 21503-21531 | |
| 6 | 07005-01212 | GASKET (K2) | 21503-21531 | |
| 7 | 6136-21-5490 | PLUG | 21503-21531 | |
| 8 | 6136-21-7210 | COVER | 21503-21531 | |
| 9 | 6136-21-7830 | GASKET (K2) | 21503-21531 | |
| 10 | 01435-01025 | BOLT | 21503-21531 | |
| 11 | 6221-23-7620 | PLATE | 21503-21531 | |
| 12 | 6221-23-7680 | GASKET | 21503-21531 | |
| 13 | 01435-01020 | BOLT | 21503-21531 | |
| 14 | 6222-23-1810 | NOZZLE,PISTON COOLING | 21503-21531 | |
| 15 | 6222-23-1820 | VALVE,CHECK | 21503-21531 |