2018 PETERBILT, 579, Heavy Duty Trucks - Sleeper Trucks, CUMMINS X15, AMT, 2018 Peterbilt 579 Ultraloft - 1 Owner Fleet Maintained Peterbilt! 450HP Cummins X15 Engine, 16 Speed Automatic Transmission, Double Bunk Condo Sleeper! 623k Miles. This truck has been serviced and DOT inspected. Call, text or email Tony at (6.1.6.) - 4.3.8.- 2.5.2.9., 450 Horse Power, Air Ride Suspension, Wheels, Wheel Base, , Axle, 2.64 Ratio, Raised Roof Sleeper, VIN