Multiple Units Available, 2021 Peterbilt 579 PACCAR MX-13 • 455 HP • PACCAR 12-Speed Endurant Transmission This 2021 Peterbilt 579 offers a PACCAR MX-13 engine rated at 455 HP, paired with a PACCAR PO-16F112C12 Endurant 12-speed automated transmission. Equipped with a 123” BBC and an 80” UltraLoft sleeper for optimal driver comfort. Key specifications include a 2.64 rear axle ratio, tandem rear axles, and low air leaf suspension. Aluminum wheels fitted with 22.5” tires deliver a sharp, professional look and solid performance. GVWR rated at 52,000 lbs with a 228” wheelbase. Clean, fleet-maintained unit—ready to work. Financing options available | Trades welcome Price does not include state and local taxes; tags; registration or title fees; dealer-imposed fees, including document preparation, processing or servicing fees, or any optional equipment or upfitting work selected by buyer. Valid while supplies last. Images shown may not reflect actual vehicle.