This variant is used to carry the air defense missile complex S-300PMU-2. This variant is used mainly to transport the air search radar 64N6 BIG BIRD for the S-300PM. In 1986, People's Republic of China fielded its version of MAZ-543. Initially designated WS580 but later renamed WS2400, this Chinese version is one of the Wanshan series trucks manufactured by Wanshan Special Vehicle, a wholly owned subsidiary of China Aerospace Sanjiang Space Co. Ltd., which is in turn a subsidiary of China Aerospace Science and Industry Corporation (CASIC). The advantage of the Chinese vehicle is that it utilizes a German diesel engine, transmission and hydraulics manufactured by Wanshan in China, built using technologies transferred from ZF Friedrichshafen.