The EMD SD22ECO is a 2,150 hp (1,600 kW) C-C diesel-electric locomotive rebuilt by Electro-Motive Diesel.
It is, along with the GP22ECO, primarily the application of a conversion kit to an existing EMD SD40-type locomotive.
This involves replacing the existing prime mover with an EPA Tier-II-compliant turbocharged V8 710G3A-T2, with electronic fuel injection.
The prime mover is mated to an AR10 alternator for traction power, a CA6 alternator for control power, and a computerized control system.
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