2020 Peterbilt 389. 525HP Cummins X15. 13 Speed Transmission. 40,000LB Rears. Steerable Air Lift Axle. Only 244,000 Original Miles. Air Trac Suspension. Steer Axle Disc Brakes. Loaded Interior. Gauge Package. Concert Class Stereo. Long Track Air Slide Fifth Wheel. 11R24.5 Tires. Aluminum Rear Quarter Fenders. Engine Brake. Cruise Control. Dual Breathers. Clean Peterbilt 389