2017 PETERBILT, 579, Heavy Duty Trucks - Sleeper Trucks, CUMMINS X15, AMT, 2017 Peterbilt 579 Ultraloft Here is a very clean 80 Sleeper! This Ultraloft Peterbilt has a Cummins 450HP X15 Engine, 16 Speed Eaton Automatic Transmission, Double Bunk Condo Sleeper and 2.64 rears! This truck has 616k Miles. This truck has been serviced and DOT inspected. Call, text or message Steven at (6.1.6.) - 6.0.0 - 2.6.8.2., 450 Horse Power, Air Ride Suspension, Wheels, Wheel Base, , Axle, 2.64 Ratio, Raised Roof Sleeper, VIN