Derivatives
A freight-only derivative, the EMD F45, was sold in greater numbers (86) to the Santa Fe, the Great Northern Railway, and the Burlington Northern Railroad. Amtrak bought a similar passenger locomotive based on the 3,000 hp (2,240 kW) SD40-2, the SDP40F. At least one F45 remains in service on the Montana Rail Link in the northern United States as of January 2008, and it sees regular freight service on the line.
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