2020 Peterbilt 389. 525HP Cummins X15. 18 Speed Transmission. Only 456,000 Original Miles. 40,000LB Full Locking Rears. Air Trac Suspension. Loaded Interior. Gauge Package. Concert Class Stereo. Air Slide Fifth Wheel. 295/75R22.5 Drives 11R22.5 Steers. Aluminum Rear Half Fenders. Engine Brake. Cruise Control. Dual Stacks. Dual Breathers. Clean Peterbilt 389