2015 Peterbilt 389. Factory Glider. 500HP 12.7 Series 60 Detroit. 18 Speed Transmission. 40,000LB . Only 865,000 Original Miles. Air Ride Suspension. Wet Kit. Loaded Interior. Leather Seats. Gauge Package. Concert Class Stereo. Air Slide Fifth Wheel. 11R22.5 Tires. Rear Half Fenders. Engine Brake. Cruise Control. Dual Stacks. Dual Breathers. Clean Peterbilt 389 Glider