Eng Make: CUMMINS, Eng Model: X15 450 HP, Trans Make: EATON, Trans Model: EEO-18F112C ENDURANT, Speeds: 12, FA Make: DETROIT, FA Model: DA-F-12.5, FA Weight: 12,500, RA Make: DETROIT, RA Model: DA-RT-40.0, RA Weight: 40,000, Front Tires: 275/80R22.5, Rear Tires: 275/80R22.5, FR Susp: TAPERLEAF, RR Susp: AIR, WB: 227", Ratio: 2.85, Fuel Tank: DUAL 100 GAL LH/RH,