Cummins NTC 6 Cylinder Diesel 444 hp Engine, 1988 US EPA Label, Engine Brake, Eaton Fuller RTO15618P 18-Speed Manual Transmission, 5833 kg Front Axle, 18144 kg Rears, Spicer DS416P Drive Axles, 4.11:1 Axle Ratio, 23977 kg GVWR, 385/65R22.5 Front Tires, 11R24.5 Rear Tires, 8-Bag Air Ride Suspension, 221 in Wheelbase, PTO, 145 in Cab to Axle, 210 in Cab to End of Frame, Hour Meter Reads 10719