Used Peterbilt 579 sleeper for sale. Features: Air Ride Cab, Carrier APU, Stainless Mudflap Brackets, Stainless Quarter Fenders, Hood Spot Mirrors, Painted Sun Visor with Lights, Power Heated Mirrors, Power Locks, Power Windows, Tilt Steering Column, Leather Air Seats, 2-bed Sleeper, Refrigerator, Disc Brakes, and remainder of 5-year/600k mile Engine and Aftertreatment System Warranty! Hundreds of new and used trucks, trailers, and parts for sale at Coopersburg & Liberty Kenworth. Three convenient locations: Coopersburg, PA (near Allentown), Swedesboro, NJ (near Philadelphia), and TRP Parts (Pottstown, PA).