3,600 Horsepower -- Built in 1985 by EMD - LaGrange, Illinois
Existing Roster
| 7000 | 7001 | 7002 | 7003 | 7004 | 7005 | 7006 | 7007 | 7008 | 7009 |
| 7010 | 7011 | 7012 | 7013 | 7014 | 7015 | 7016 | 7017 | 7018 | 7019 |
| 7020 | 7021 | 7022 | 7023 | 7024 | 7025 | 7026 | 7027 | 7028 | 7029 |
| 7030 | 7031 | 7032 | 7033 | 7034 |
Union Pacific's SD50 Renumbering Plan
| CNW No. | UP No. | CNW No. | UP No. | |
| 7000 | 5060 | 7018 | 5078 | |
| 7001 | 5061 | 7019 | 5079 | |
| 7002 | 5062 | 7020 | 5080 | |
| 7003 | 5063 | 7021 | 5081 | |
| 7004 | 5064 | 7022 | 5082 | |
| 7005 | 7023 | 5083 | ||
| 7006 | 5066 | 7024 | 5084 | |
| 7007 | 5067 | 7025 | 5085 | |
| 7008 | 5068 | 7026 | 5086 | |
| 7009 | 7027 | 5087 | ||
| 7010 | 5070 | 7028 | 5088 | |
| 7011 | 5071 | 7029 | 5089 | |
| 7012 | 5072 | 7030 | 5090 | |
| 7013 | 5073 | 7031 | 5091 | |
| 7014 | 5074 | 7032 | 5092 | |
| 7015 | 5075 | 7033 | 5093 | |
| 7016 | 5076 | 7034 | 5094 | |
| 7017 | 5077 |