Used 2021 Peterbilt 579 Day Cab – PACCAR MX-13, 455 HP, 12-Speed Automated

This used 2021 Peterbilt 579 day cab combines a proven PACCAR powertrain with a lightweight, highway-oriented configuration well suited for regional hauling, local delivery, and fleet applications. Powered by a PACCAR MX-13 diesel engine rated at 455 HP, it is paired with a 12-speed automated transmission for easy operation and efficient shifting. The truck has 402,807 miles and features Jake brakes and a horizontal exhaust system.

The 6x4 tandem-axle configuration includes a 2.64 rear axle ratio, 180-inch wheelbase, and air-slide fifth wheel. Dual fuel tanks provide 120 gallons of total capacity, with a 50-gallon left-hand tank and 70-gallon right-hand tank. The truck rides on 295/75R22.5 tires with polished aluminum wheels and is equipped with a collision mitigation system for added driver assistance.

Rated at a 52,000-lb GVWR, this Peterbilt features a 12,000-lb front axle and 40,000-lb rear axles. Its aerodynamic 579 cab, automated transmission, tandem drive, and compact day-cab configuration make it a practical choice for operators looking for a late-model Class 8 tractor.