The final TE1A variant in the range is a steam wagon. This uses the burner/boiler and engine from the TE1A, with the same front axle, attached to a lorry-style rear body with a cab and 'trayback' load bed. The engine is fitted with a smaller-diameter flywheel than the other models to produce a higher top speed. A live rear axle with distinctive diamond-spoked wheels is fitted, with the usual belt-drive from the flywheel. The model has red wheels and a blue body, with a white quarter-length canopy over the engine and boiler. The model has details such as mudguards and a cargo of 'barrels'.
An alternative colour scheme is carried by the SW1B model. Here, the model has deep brown bodywork and black wheels.