Mercedes Benz MBE900-250 6 Cylinder 6.4 L Diesel 250 hp Engine, 18623 Engine hrs, Mercedes Benz MBT660-60A 6-Speed Automated Transmission, 12000 lb Front Axle, 21000 lb Rears, ARS-21.0-4 Drive Axles, 5.22:1 Axle Ratio, 33000 lb GVWR, Air Ride Cab, 295/75R22.5 Front Tires, 275/80R22.5 Rear Tires, Airliner Air Ride Suspension, 252 in Wheelbase, 114 in Cab to Axle, 155 in Cab to End of Frame