Founded in 1946, Western Branch Diesel is a family-owned and operated company that offers a range of diesel engines from Mercedes-Benz, Volvo Penta and VM Motori. It provides generator sets, automatic transfer switches, switch gear and fuel tanks. The company offers a variety of parts and accessories from various makes, such as Timken, Webb, Horton, Haldex, Phillips, Exxon Mobil, LeeceNeville, Alcoa, Monroe and Delco Remy. Its Mercedes-Benz products include MBE900 and MBE4000 diesel engines. The company also offers Allison RETRAN AT545 for school buses. It provides repair and testing services for generators. The company offers trailer-mounted rental generators, electronic unit injectors and engine sensors. Western Branch Diesel maintains a location in Manassas, Va.