Make: Peterbilt Year: 2016 Condition: New Unit 49650 (16034) listed by iSellPro, for sale by Quad City Peterbilt - 2016 PETERBILT 389 TANDEM AXLE DAYCAB FOR SALE IN IOWA :: - PETERBILT 389 for Sale Engine: PACCAR MX13 500 HP Transmission: 13 Spd. Axles: Tandem Suspension: Pete Low Air Leaf Rear Ratio: 3.55