After the 13 class KK16 freight locomotives, ENR ordered 38 passenger locomotives from Henschel, which in turn were developed based on EMD technology. In contrast to the predecessors, these locomotives only received an engine from the 567 series from EMD, which here had 16 cylinders and delivered 1,950 hp. One motor reduced the length of the locomotive by about two meters. The three-axle bogies were still equipped with two traction motors and a carrying axle. They were designed for a top speed of 120 km/h and were 20 tonnes lighter than the KK16.