2020 Peterbilt 389. 565HP Cummins X15. 18 Speed Transmission. 40,000LB Full Locking Rears. Only 447,000 Original Miles. Air Trac Suspension. Dual Line Wet Kit. Loaded Interior. Leather Seats. Gauge Package. Concert Class Stereo. Air Slide Fifth Wheel. 11R24.5 Tires. Aluminum Rear Half Fenders. Engine Brake. Cruise Control. Dual Breathers. Clean Peterbilt 389