2018 Peterbilt 389. Cummins X15. 13 Speed Transmission. Only 450,000 Original Miles. 40,000LB Rears. Air Trac Suspension. Steer Axle Disc Brakes. Dual Line Wet Kit. Loaded Interior. Gauge Package. Concert Class Stereo. Air Slide Fifth Wheel. 11R22.5 Tires. Stainless Steel Rear Fenders. Engine Brake. Cruise Control. Dual Breathers. Clean Peterbilt 389