South African Class GMA 4-8-2+2-8-4

The South African Railways Class GMA 4-8-2+2-8-4 of 1954 is an articulated steam locomotive. Between 1954 and 1958 the railways placed 120 Class GMA Garratt articulated locomotives with a 4-8-2+2-8-4 Double Mountain wheel arrangement in service, the most numerous Garratt class in the world. All could be set up as a Class GMA branch line engine or a Class GMAM mainline engine by adjusting the coal and water capacity. Beyer, Peacock and Company built most of them, but it subcontracted twelve, numbered 4099 to 4110, and a further twenty to the North British Locomotive Company, so their works plates showed both builders. Number 4140 was the last steam locomotive built by North British.