2021 Peterbilt 579, Cummins, X15, 450HP, Eaton Fuller 12 Speed Endurant Transmission, Day Cab, , , Stock # 1656382 2021 Peterbilt 579, Cummins, X15, 450HP, Eaton Fuller 12 Speed Endurant Transmission, Day Cab. Ask about the great financing and warranty options available! 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.