Used Peterbilt 579 Sleeper for sale. Features: Air Ride Cab, TK Tri-Pac APU, Espar Heater, Stainless Half Fenders, Stainless Mudflap Brackets, Cab Sun Visor w/Lights, Power Heated Mirrors, Power Locks and Windows, Tilt Steering Column, Air Ride Seats, 1-bed Bunk, Refrigerator, Air Conditioning, Cruise Control, and more. 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).