The Indian locomotive class WDG-4 (EMD GT46MAC) is a freight-hauling diesel-electric locomotive with AC electric transmission designed by General Motors Electro-Motive Diesel in 1997–1998 for Indian Railways, where they are classed as WDG-4. Thirteen were built by EMD as order #958647, and a further eight were exported in kit form and assembled in India. Still, South-Western Railways, Konkan Railways, and Northern Railways use this locomotive as a major component. In Tamil Nadu, there is a shed at Ponmalai under the Tiruchirappalli Division.