GE Dash 9-40C

The GE Dash 9-40C, also called a C40-9, is a 4,000-horsepower (3,000 kW) diesel locomotive that was built by GE Transportation Systems of Erie, Pennsylvania, between January 1995 and March 1995. The C40-9 is equipped with the 16-cylinder 7FDL-16 prime mover which is rated at a lower power than the 4,400 hp (3,300 kW) GE Dash 9-44CW that debuted a year earlier in 1994. It features GE's direct current B13B traction motors.

The C40-9 features the standard cab design and is the only model in the Dash-9 series to do so. It is essentially identical to the wide-cab C40-9W model otherwise. All units have rooftop-mounted air conditioner units which gives them their distinct "top hat" look.

Norfolk Southern Railway (NS) is the only operator of this model. The company owns 125 units, numbered 8764–8888. NS specifically requested the standard cab and may have purchased more units had the Federal Railroad Administration not required it to purchase the wide-cab C40-9W version instead.

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