FOR SALE 2021 Peterbilt 579 - 80" UltraLoft Sleeper - Stock # 1586766 Cummins X15 450HP paired to an Eaton Fuller 18-speed manual transmission. Set-back front axle, 14,600 lb front, Dana D40-155 tandem rears with 2.93 ratio on Flex Air suspension. 240" wheelbase, 53,200 lb GVWR. Engine brake equipped. Well-spec’d OTR configuration with 80" UltraLoft Platinum double-bunk sleeper, Bendix Wingman Fusion collision mitigation, cab extenders, horizontal exhaust, aluminum front wheels, and 22.5 LP rubber showing full tread. Stationary fifth wheel setup. Clean, straight exterior with aerodynamic package and professional red/black color combo. Interior features a premium Peterbilt cab with double bunk sleeper, ample cabinet storage, fridge, inverter, and driver-friendly dash layout. Clean, well-kept sleeper area with upper and lower bunks and organized cabinetry—ideal for long-haul or team operations. Thermo King APU, Fleet-maintained and ready for work. Call or message for details. All units are being prepared to a consistent, retail-ready standard to ensure reliability and minimize downtime for the next owner. Each truck will receive a fresh DOT inspection along with a complete PM service. Intake and emissions components are addressed with new air and DEF filters installed. Brake systems are fully serviced with new brakes and drums, and all units will be equipped with brand new virgin tires—no recaps. Electrical reliability is also covered with new batteries installed. Multiple Units | Financing options available | Trades Welcome Location - Rush Truck Center Tulsa