| Item | Part No. | Part Name | Qty | Serial No. |
| ENGINE, TIER I (SEE FIG. A0100-01A0) | A90002-A90008- | |||
| YM72390001560 | CYLINDER BLOCK | A90002-A90008- | ||
| YM12390001000 | CYLINDER BLOCK | A90002-A90008- | ||
| 1 | (NSS) | BLOCK | A90002-A90008- | |
| 2 | YM17105101921 | PLUG | A90002-A90008- | |
| 3 | YM12390002020 | BOLT | A90002-A90008- | |
| 4 | YM12390002410 | BUSHING | A90002-A90008- | |
| 5 | YM22351060012 | SPRING PIN | A90002-A90008- | |
| 6 | YM23875030000 | PLUG | A90002-A90008- | |
| 7 | YM27231700000 | PLUG | A90002-A90008- | |
| 8 | YM27241300000 | PLUG | A90002-A90008- | |
| 9 | (NSS) | JOURNAL, REAR MAIN | A90002-A90008- | |
| 10 | (NSS) | JOURNAL, MAIN | A90002-A90008- | |
| 11 | YM12390002800 | BEARING, STANDARD | A90002-A90008- | |
| 11 | YM12390002870 | BEARING, -0.25 MM | A90002-A90008- | |
| 12 | YM12390002930 | THRUST, BEARING STANDARD | A90002-A90008- | |
| 12 | YM12390002940 | THRUST, BEARING +0.25 MM | A90002-A90008- | |
| 13 | YM12390001330 | GASKET | A90002-A90008- | |
| 14 | BOLT (SEE FIG. A0103-01A0) | A90002-A90008- | ||