EMD SD45

The EMD SD45 is a freight diesel-electric locomotive built by General Motors' Electro-Motive Division from 1965, a six-axle model distinguished by an unusually large twenty-cylinder engine that gave it more horsepower than most contemporary freight locomotives, intended to let railroads move heavy trains with fewer locomotive units. Recognizable by its distinctive flared radiator intakes at the rear of the body, needed to cool its larger engine, the SD45 was purchased by numerous major American freight railroads during the late 1960s and early 1970s, though the added complexity and maintenance demands of its larger engine led some railroads to prefer later, more conventional Electro-Motive models. It is remembered as one of the more distinctive-looking American freight locomotives of its era.