The International LoneStar Sleeper Cab 8x4 is a Class 8 heavy-duty truck built by Navistar International. It uses an 8x4 axle configuration with two steer axles and two drive axles, mainly for heavy vocational use or special haul applications. It runs a Cummins X15 engine producing 400 to 605 horsepower and 1,450 to 2,050 lb-ft torque. Transmissions include Eaton Fuller manual or automated options ranging from 9 to 18 speeds. Gross vehicle weight can go up to 60,600 lbs, and gross combined weight up to 140,000 lbs. Sleeper cab sizes include 56" low-roof or high-rise and 73" high-rise or sky-rise. Features include digital gauges, collision mitigation system, electronic stability control, optional air disc brakes, wide visibility windows, column shifter, and improved insulation. Interior options include bunks or sofas, fridge, table, and storage. Fuel efficiency is around 3% better than previous models. Design is retro-styled with modern aerodynamic improvements. Final production ended in December 2023.

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