DESCRIPTION 2020 Kenworth T680 (JN3261), Cummins engine, automatic transmission, heat, air conditioning, upgraded Kenworth radio, APU, 295/75R22.5 tires, shows 576,556 miles. Serial Number: 1XKYD49X8LJ418114 Notes: Broken springs in brake chamber, Sensor replaced, APU wiring harness broken.