NS 9401
| Uprated from 4,000 to 4,400 horsepower |
C40-9W
| 52310 | 4 | 24371 |
NS 9403
| Has C44-9W markings on the side |
C40-9W
| 52312 | 8 | 396 |
NS 9446
| Uprated from 4,000 to 4,400 horsepower |
C40-9W
| 52355 | 6 | 32896 |
NS 9587
| Built Jan.2001, placed in service Jan. 11,2001, order # 1934 |
C40-9W
| 52909 | 5 | 19110 |