2018 Peterbilt 389. Factory UltraCab. 500HP Cummins X15. 10 Speed Transmission. Only 357,000 Original Miles. 40,000LB Full Locking Rears. Air Trac Suspension. Wet Kit. Loaded Interior. Leather Seats. Gauge Package. Concert Class Stereo. Air Slide Fifth Wheel. 11R24.5 Tires. Engine Brake. Cruise Control. Dual Stacks. Dual Breathers. Clean Peterbilt 389