Mack MP8 12.7 L Ultra Low Sulfur Diesel 435 hp Engine, Requires Diesel Exhaust Fluid, Air Conditioner, Cruise Control, Engine Brake, Eaton Fuller FRO-18210C 10-Speed Manual Transmission, 12000 lb Front Axle, 40000 lb Rears, Meritor RD20-145 Drive Axles, 3.42:1 Axle Ratio, 52000 lb GVWR, Air Ride Cab, 60 in Mid Roof Sleeper Cab, Aluminum Front Wheels, 11R22.5, Air Ride Suspension, 223 in Wheelbase, Air Sliding 5th Wheel, Dual Fuel Tanks