2018 Peterbilt 389. Cummins X15. 10 Speed Transmission. Only 539,000 Original Miles. 40,000LB Full Locking Rears. Air Ride Suspension. Steer Axle Disc Brakes. Dual Line Wet Kit. Loaded Interior. Gauge Package. Concert Class Stereo. Air Slide Fifth Wheel. 11R24.5 Tires. Poly Rear Quarter Fenders. Engine Brake. Cruise Control. Dual Stacks. Dual Breathers. Clean Peterbilt 389