2020 Peterbilt 389. 525HP Cummins X15. 13 Speed Transmission. 40,000LB Full Locking Rears. Steerable Air Lift Axle. Only 309,000 Original Miles. Air Trac Suspension. Steer Axle Disc Brakes. Loaded Interior. Leather Driver Seat. Gauge Package. Concert Class Stereo. Air Slide Fifth Wheel. 11R24.5 Tires. Stainless Steel Rear Quarter Fenders. Aluminum Headache Rack. Engine Brake. Cruise Control. Dual Breathers. Clean Peterbilt 389