Used Kenworth T660 Sleeper for sale. Features: Leather Seats, Single Exhaust, Couch and Upper Bunk, Refrigerator, Navigation, Smart Wheel, Dura-Bright Finish Wheels, and more. 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).