Make: Peterbilt Mileage: 192,508 Mi Year: 2012 Condition: Used Unit 46551 (U174959) listed by iSellPro, for sale by Peterbilt of Norfolk - Platinum Interior, Leather Seats, Hard to find Low Roof 2012 PETERBILT 388 TANDEM AXLE SLEEPER FOR SALE IN NEBRASKA:: - PETERBILT 388 for Sale Engine: CUMMINS ISX 485 HP Transmission: 18 Spd. Axles: Tandem Suspension: Pete Low Air Leaf Rear Ratio: 3.70.