Used Peterbilt 579 Sleeper for sale. Features: Air Ride Cab, Espar Heater, Hood Spot Mirrors, Painted Sun Visor with Lights, Power Heated Mirrors, Power Locks and Windows, Tilt Steering Column, Air Ride Seats, 2-bed Sleeper, Refrigerator, Air Conditioning, Cruise Control, Collision Mitigation System, Remainder of 5-year/500k Mile Engine and Aftertreatment System Warranty. Coopersburg & Liberty Kenworth has new trucks, used trucks, trailers, and parts for sale. Locations: Coopersburg, PA (near Allentown), Swedesboro, NJ (near Philadelphia), and TRP 068 (Pottstown, PA).