2020 Peterbilt 389. 565HP Cummins X15. 18 Speed Transmission. Only 450,000 Original Miles. 40,000LB Rears. Air Trac Suspension. Disc Brakes. Loaded Interior. Leather Driver Seat. Gauge Package. Concert Class Stereo. Air Slide Fifth Wheel. 11R24.5 Tires. Rear Half Fenders. Engine Brake. Cruise Control. Dual Stacks. Dual Breathers. Clean Peterbilt 389