The EMD F59PH is a four-axle 3,000 hp (2 MW) B-B diesel-electric locomotive built by General Motors Electro-Motive Division from 1988 to 1994.

[1] Based on the GP59, the locomotives had a turbocharged EMD 12-710G3A, a 12-cylinder, two-stroke Diesel engine (prime mover).

[5] Most were purchased by other operators including Exo (10 locomotives),[7] Metra (3),[8][9] NCDOT (11) for use on the Piedmont,[10][11] and Trinity Railway Express (7).

[16] Like the F59PH, the F59PHI is equipped with a secondary electrical generator – rated between 500 and 750 kW (670 and 1,010 hp) – for HEP.

[17] A total of 83 locomotives were built, most for commuter rail and Amtrak corridor services on the West Coast.