2020 PETERBILT, 579, Heavy Duty Trucks - Sleeper Trucks, CUMMINS X15, Automatic, 2020 Peterbilt 579 - Here is a very nice fleet maintained 1 Owner Peterbilt! This truck is very clean! Cummins X15 Engine, Eaton Endurant Automatic Transmission! Only 370k Miles! This truck has been Serviced and DOT Inspected. Call, text or email Steven at 6 . 1 . 6 . 6 . 0 . 0 .. 2 . 6 . 8 . 2, 450 Horse Power, Air Ride Suspension, Wheels, Wheel Base, , Axle, Ratio, Mid Roof Sleeper, VIN