Cummins ISX15 6 Cylinder 15.0 L Diesel 400 hp Engine • 2012 US EPA Label • Requires Diesel Exhaust Fluid • Engine Brake • Eaton Fuller RTOCM-16909A 9-Speed Manual Transmission • 12000 lb Front Axle • 40000 lb Rears • DSP40 Drive Axles • 3.42:1 Axle Ratio • 52000 lb GVWR • Air Ride Cab • 72 in High Rise Sleeper Cab • Aluminum Outer Wheels • 11R22.5 • Paccar Air Ride Suspension • 232 in Wheelbase • Air Sliding 5th Wheel