Make: Peterbilt Year: 2015 Condition: New Unit 50125 (175328) listed by iSellPro, for sale by Peterbilt of Council Bluffs - Exterior Color-Buckskin,Espar Heater,Leather Seats,Fuel Tank Heaters, TV and Inverter Prep. 2015 PETERBILT 579 TANDEM AXLE SLEEPER FOR SALE IN IOWA :: - Peterbilt 579 for Sale Engine: PACCAR MX 500 HP Transmission: 13 Spd. Axles: Tandem Suspension: Pete Low Air Leaf Rear Ratio: 3.25