Detroit DD15 6 Cylinder 14.8 L Diesel 455 hp Engine, 2018 US EPA Label, Requires Diesel Exhaust Fluid, Engine Brake, Eaton Fuller FRO-16210C 10-Speed Manual Transmission, 13200 lb Front Axle, 40000 LB Rears, Detroit DA-RT-40.0-4 Drive Axles, 3.31:1 Axle Ratio, 53200 LB GVWR, Air Ride Cab, 60 in Mid Roof Sleeper Cab, ALUMINIUM Wheels, 11R22.5 Front Tires, 11R22.5 Rear Tires, Airliner Air Ride Suspension, 220 in Wheelbase, Air Sliding 5th Wheel..etc