These trucks are equipped with the D-13 455 / 1850 torque engine, i-shift 12 speed auto transmission. 13200 fronts and 40k rear axles with a 2.64 ratio. Dual fuel tanks (200 gallons). Premium level interior, X-5 seats, refrigerator, inverter, shore power and cab heater. CARB and EPA certified includes component coverage for 60 months, or 350k miles.