STW Spares is an online parts supplier serving owners and builders of miniature steam engines and related models. Its shop is organised around specific engine types and kit series, making it easier to find components for models including Burrell agricultural engines, road locomotives, showmans’ engines and rollers, Foden C Type and SWB engines, and Lykamobile steamers. The catalogue also covers trailers, driving wagons and bowser gaskets.

Products include replacement gaskets, piston rings, water-gauge glass, valves, pipe fittings, injectors, gears, tow pins, bushes, fasteners and other mechanical parts. Customers can browse dedicated kit sections as well as general categories such as miscellaneous sundries, steam fittings and old stock. STW Spares also provides instructions, isometric drawings and important information to support customers working with their kits. The website offers contact details and information about the business, which is based in Clay Coton, Northamptonshire. With its model-specific catalogue and assortment of individual components, STW Spares helps customers source parts for maintaining and completing miniature traction engines and steam models.