The Diesel Locomotive Works (DLW) in Varanasi, India, is a production unit owned by Indian Railways, which manufactures diesel-electric locomotives and their spare parts. It is the largest manufacturer of diesel-electric locomotives in India. It is locally abbreviated as D L W. It is located on the DLW road to BHU of the metropolitan city of Varanasi.
Founded in 1961, DLW launched its first locomotive three years later, on January 3, 1964. It manufactures locomotives that are variants based on the original ALCO designs dating back to the 1960s and GM EMD designs of the 1990s. DLW has an annual production capacity of 250 locomotives and plans to increase it to 275 depending on the current demand.
DLW locomotives have powers ranging from 2,600 horsepower (1,900 kW) to 5,500 horsepower (4,100 kW). Currently DLW produces locomotives EMD GT46MAC and EMD GT46PAC under license from Electro-Motive Diesels (formerly GM-EMD) for Indian Railways. Some of its EMD locomotive products are WDP4, WDP4D, WDG4D, WDG5 and others as of June 2015.