| Item | Part No. | Part Name | Qty | Serial No. |
| 1 | 6221-31-2110 | PISTON | 11731- | |
| 2 | 6221-31-2410 | PIN,PISTON | 11731- | |
| 3 | 04065-04518 | RING,SNAP | 11731- | |
| 6221-31-2200 | PISTON RING ASS'Y | 11731- | ||
| 4 | \6\ | RING,TOP | 11731- | |
| 5 | \6\ | RING,SECOND | 11731- | |
| 6 | \6\ | RING,OIL | 11731- | |
| 6221-31-3100 | CONNECTING ROD ASS'Y | 11731- | ||
| 7 | \6\ | ROD,CONNECTING | 11731- | |
| 8 | \6\ | CAP | 11731- | |
| 9 | \5\6221-31-3130 | BUSHING | 11731- | |
| 10 | 02400-10313 | PIN,DOWEL | 11731- | |
| 11 | 6221-31-3310 | BOLT | 11731- | |
| STANDARD | ||||
| 6222-31-3040 | CRANK PIN METAL A. | 11731- | ||
| 12 | \6\ | METAL,UPPER | 11731- | |
| 13 | \6\ | METAL,LOWER | 11731- | |
| UNDERSIZE 0.25MM | ||||
| 12 | 6222-39-3040 | CRANK PIN METAL A. | 11731- | |
| 12 | \6\ | METAL,UPPER | 11731- | |
| 13 | \6\ | METAL,LOWER | 11731- | |
| UNDERSIZE 0.50MM | ||||
| 12 | 6222-38-3040 | CRANK PIN METAL A. | 11731- | |
| 12 | \6\ | METAL,UPPER | 11731- | |
| 13 | \6\ | METAL,LOWER | 11731- | |
| UNDERSIZE 0.75MM | ||||
| 12 | 6222-37-3040 | CRANK PIN METAL A. | 11731- | |
| 12 | \6\ | METAL,UPPER | 11731- | |
| 13 | \6\ | METAL,LOWER | 11731- | |
| UNDERSIZE 1.00MM | ||||
| 12 | 6222-36-3040 | CRANK PIN METAL A. | 11731- | |
| 12 | \6\ | METAL,UPPER | 11731- | |
| 13 | \6\ | METAL,LOWER | 11731- |