2020 PETERBILT, 579, Heavy Duty Trucks - Sleeper Trucks, PACCAR MX-13, AMT, 2020 Peterbilt 579 Ultraloft Remaining 7 Year / 700K Major Engine Components Warranty! Fleet Maintained Peterbilt! This truck glides in the night! Utraloft Condo Sleeper! Paccar MX-13 455HP Engine, Paccar 12 Speed Automatic Transmission! 431k Miles with only 10k Hours. This truck has been serviced and DoT inspected. Call, text or email Steven at (616) 6 . 0 .0 .- 2 . 6 . 8 . 2, 455 Horse Power, Air Ride Suspension, Wheels, Wheel Base, , Axle, Ratio, Raised Roof Sleeper, VIN