2020 Peterbilt 579 high roof sleeper cab 6x4 conventional truck, PACCAR MX-13 12.9L I6 380-500hp 1450-1850ft. lbs. diesel engine, 12-Sp PACCAR TX-12 PRO automatic transmission, air ride, air brakes, rear tandem axle, ALCOA aluminum rims with 295/75R22.5 tires, 110-Gal driver side fuel tank and 80-Gal passenger side fuel tank, 2-passenger black vinyl interior with bunk bed, AC, power windows and locks, ... Engine: PACCAR MX-13 12.9L I6 380-500hp 1450-1850ft. lbs. diesel engine EngineType: PACCAR MX-13 12.9L I6 380-500hp 1450-1850ft. lbs. diesel engine