The NSB Di 8 is a class of diesel-electric locomotives built by Maschinenbau Kiel (MaK), while it was part of Siemens Schienenfahrzeugtechnik, for the Norwegian State Railways (NSB). The locomotives are equipped with a Caterpillar 3516 DI-TA prime mover, which provides a power output of 1,570 kilowatts (2,110 hp) and a starting tractive effort of 270 kilonewtons (61,000 lbf).