The EMD NW2 is a 1,000 hp (750 kW), B-Bswitcher locomotive manufactured by General MotorsElectro-Motive Division of La Grange, Illinois. From February 1939 to December 1949, EMD produced 1,145 NW2s: 1,121 for U.S. and 24 for Canadian railroads. Starting in late 1948, the NW2s were manufactured in EMD's Plant #3 in Cleveland, Ohio. The locomotives were powered by a 12-cylinder model 567 engine and later a model 567A engine. In addition, EMD built three TRcow–calf paired sets, 36 TR2 cow–calf paired sets, and two TR3 cow–calf–calf sets. The TR sets were built before World War II; the TR2 and TR3 sets afterward.