Make: Peterbilt Year: 2016 VIN Number: 305818 Condition: New Unit 50124 (175255) listed by iSellPro, for sale by Peterbilt of Sioux City - 579 small sleeper with pusher axle. Dual exhaust, SS sunvisor, and 2 tone paint. 2016 PETERBILT 579 TRI-AXLE SLEEPER FOR SALE IN IOWA :: - PETERBILT 579 for Sale Engine: PACCAR MX 500 HP Transmission: 13 Spd. Axles: Tri Suspension: Pete Low Air Leaf Rear Ratio: 3.36