THE DEALS KEEP ROLLING! – Make Offer! ($22K SAVINGS) Used 2016 Peterbilt 389 Dump Truck for Sale. Features: 18' Summit Aluminum Dump Body, Single Locker, Double Frame, 20k Non-Steerable Lift Axle, Coal Chute, Prestige Interior, Navigation, AM/FM/CD Radio, and more. Hundreds of new and used trucks, trailers, and parts for sale at Coopersburg & Liberty Kenworth. Four convenient locations: Coopersburg, PA (near Allentown), Swedesboro, NJ (near Philadelphia), Bristol, PA (near Philadelphia), and TRP Parts in Pottstown, PA (near Reading).