The Iarnród Éireann (IE) 201 Class locomotives are the newest and most powerful diesel locomotives operating in Ireland, and were built between 1994 and 1995 by General Motors. They are model type JT42HCW, fitted with an EMD 12-710G3B engine of 3,200 hp (2,400 kW), weigh 108.862 tonnes (107.143 long tons; 120.000 short tons) and have a maximum speed of 164 km/h (102 mph). A freight version, the EMD Series 66, with the same engine is used on privately operated European mainline freight duties.