2022 Peterbilt 579, Cummins, X15, 450HP, Fuller 12 Speed Endurant Transmission, Sleeper, , , Stock # 1276355 2022 Peterbilt 579, Cummins 450 HP, 12 SPD Endurant transmission. NAP 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.