The MPI MP20C is a switcher diesel locomotive designed and built by MotivePower in Boise, Idaho.
It has a MTU-Detroit Diesel 12V4000 engine. It weighs approximately 390,000 lb and is long. It has a maximum speed of . It also includes a C-C wheel arrangement and an optional dynamic brake. It includes a continuous tractive effort of and a starting tractive effort of . It is built on an EMD SD40 frame.