8.3 Cummins 275 Hp RT 8608L-8 Speed 12000# Front Axle 23000# Rear Axle 148 WB 4.10 Ratio Air Ride Suspension 11x22.5 Front 75% 11x22.5 Rear 30-80% Air Conditioning Power Windows Cruise Control Heated Mirrors Fixed Fifth Wheel Block Heater 75 Gallon Steel Fuel Tank New Clutch Brakes / Front - 30% Brakes / Rear - 75%