2006 Peterbilt 379. CAT C15. 13 Speed Transmission. Only 420,000 Original Miles. 40,000LB Rears. Air Trac Suspension. Dual Line Wet Kit. Loaded Interior. Leather Seats. Gauge Package. Air Slide Fifth Wheel. 11R24.5 Tires. Aluminum Headache Rack. Engine Brake. Cruise Control. Dual Stacks. Dual Breathers. Clean Peterbilt 379