Mack MP8-505E 6 Cylinder 12.8 L Diesel 505 hp Engine • 2012 US EPA Label • Requires Diesel Exhaust Fluid • Air Conditioner • Cruise Control • Power Windows • Engine Brake • Eaton Fuller FRO-16210C 10-Speed Manual Transmission • 12000 lb Front Axle • 40000 lb Rears • 3.36:1 Axle Ratio • 52000 lb GVWR • Air Ride Cab • 70 in Mid Roof Sleeper Cab • Aluminum Wheels • 275/80R22.5 Front Tires • 295/75R22.5 Rear Tires • Double Frame • Air Ride Suspension • 291 in Wheelbase • Air Sliding 5th Wheel