The Litens 910013A Accessory Drive Belt Tensioner is a genuine part designed for use in Detroit Diesel Series 50 and 60 engines. It comes with a free core charge and is designed to withstand the demands of the accessory drive belt system in your vehicle. With interchange part numbers and superseded part numbers listed as 910013A, this Litens tensioner is a reliable choice for maintaining the optimal performance of your engine. Orion Bus Orion VI: 2000. New Flyer D60: 1995. New Flyer C40LF: 2001. 8.5L L6 CNG. 8.5L L6 Diesel Turbo/Aftercooled. 11.1L L6 Diesel Turbo/Aftercooled. 12.7L L6 Diesel Turbo/Aftercooled.