The MPI MP33C is a model of diesel-electric freight locomotives designed and built by MotivePower in Boise, Idaho, USA.

[1][2] In May 2012, ten were ordered by Railfirst Asset Management[3][4] followed by a further six in June 2013.

[7] The MP33Cs are hood unit locomotives with a single cab at one end, and ride on three axle bogies of C-C (Co-Co) wheel arrangement (33 signifying 3,300 hp and C, three driven axles per bogie).

[2] The locomotives are equipped with a Cummins V18 QSK78 prime mover rated at 3,300 hp (2,460 kW).

[2] The engine blocks for the prime movers are cast in Germany and sent to the Cummins engine plant in Daventry, England, for the final machining and assembly process.