EMD SW1504

The EMD SW1504 is a 1,500 horsepower diesel-electric switcher locomotive built by General Motors Electro-Motive Division. The type was sold only to the national railroad of Mexico, Ferrocarriles Nacionales de Mexico, and 60 examples were built between May and August 1973. After the breakup of the national railroad the locomotives passed to a variety of successor railroad operators in Mexico, and some have been sold to leasing companies in the United States. The SW1504 belongs to the long line of EMD switchers that began with the SW series, and its single-customer, short production run makes it one of the more specialised export models of the builder.