| EMD GP33ECO | |
| Powertype: | Diesel |
| Builder: | Norfolk Southern Railway |
| Builddate: | 2014 |
| Numberrebuilt: | 30 |
| Aarwheels: | B-B |
| Uicclass: | Bo′Bo′ |
| Primemover: | 12N-710G3B-T3 |
| Rpmrange: | 900-950 |
| Enginetype: | diesel |
| Aspiration: | Turbocharged |
| Displacement: | 8520 cu in |
| Alternator: | AR15CA6-D14 |
| Tractionmotors: | 4 D87B |
| Cylindercount: | 12 |
| Cylindersize: | 710 cu in |
| Transmission: | electric |
| Multipleworking: | AAR |
| Poweroutput: | (software limited)[1] |
| Tractiveeffort: | 64,200 lbs |
| Locobrakes: | pneumatic, dynamic |
| Fleetnumbers: | 4700-4729 |
| Currentowner: | Norfolk Southern |
| Notes: | [2] |
The EMD GP33ECO is a 4-axle diesel-electric locomotive built by the Norfolk Southern Railway in its Juniata Locomotive Shop. The locomotive is a rebuild of the EMD GP50 designed to meet Tier 3 emissions standards. The first locomotive was completed in January 2015. The rebuild was funded in part by the federal Congestion Mitigation and Air Quality Improvement Program.[3]