The CIE 141 Class locomotives were built in 1962 by General Motors Electro Motive Division (EMD) in the United States. Numbered B141 to B177, they were an updated version of the 121 Class locomotives, mechanically very similar but with cabs at each end. Many of these locomotives were later rebuilt with a GM 8-645E engine of 1,100 horsepower (820 kW) (as used in the re-engined Class C locomotives), though some have since had the original engine refitted. The locomotives were delivered in the CIE livery of brown/black/white.