An EMD GP20 is a 4-axle diesel-electric locomotive built by General Motors Electro-Motive Division between November 1959 and April 1962. Power was provided by an EMD 567D2 16-cylinder turbocharged engine which generated 2,000 horsepower (1,500 kW). EMD was initially hesitant to turbocharge their 567-series diesel engine, but was spurred on to do so following successful tests made by Union Pacific in the form of their Omaha GP20 units. 260 examples of this locomotive model were built for American railroads.
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