| Item | Part No. | Part Name | Qty | Serial No. |
| (257-20-21500) | ENGINE ASS'Y | 1501- | ||
| 1 | KT15521-7291-1 | FLANGE | 1501- | |
| 2 | KT15521-7292-1 | GASKET | 1501- | |
| 3 | KT01123-50822 | BOLT | 1501- | |
| 4 | KT01513-50822 | STUD | 1501- | |
| 5 | KT01153-50870 | BOLT | 1501- | |
| 6 | KT02156-50080 | NUT | 1501- | |
| 7 | KT04512-50080 | WASHER,SPRING | 1501- | |
| 8 | KT15521-7334-1 | PIPE,WATER | 1501- | |
| 9 | KT15321-7334-1 | PIPE,WATER | 1501- | |
| 10 | KT15109-7336-4 | BAND | 1501- | |
| 11 | KT15321-7326-2 | COVER | 1501- | |
| 12 | KT15321-7327-1 | GASKET | 1501- | |
| 13 | KT01123-50835 | BOLT | 1501- | |
| 14 | KT15321-7301-1 | THERMOSTAT ASS'Y | 1501- |