2026 Western Star 49X

Application fitment centers on heavy vocational and high-GCWR work, with 441 miles showing a near-new duty cycle and no meaningful wear history yet. Day cab layout points to regional haul, terminal work, or short-cycle heavy moves where cab weight and maneuverability matter more than sleeper amenities. Powertrain spec is the headline, Cummins ISX15 rated at 605 hp paired with an Eaton-Fuller Endurant AMT, 18-speed. Tandem 6x4 with 18,180 lb front axle and 40,000 lb rears sets it up for Class 8 loading, with air ride helping ride quality and traction management under varying pin weights. Wheelbase and hookup hardware support versatility, 265-inch wheelbase with a sliding fifth wheel for dialing in axle weights across different trailer kingpin settings. Aluminum wheels reduce unsprung weight and help corrosion resistance, while the white exterior keeps heat load down and makes body and panel condition easy to monitor during inspections. Walkaround priorities on a new truck stay basic, frame rails and crossmembers should be checked for shipping scuffs, paint rub-through, and any drill marks from accessory installs. Fifth wheel slide rails and locking jaws should be verified for proper grease coverage and full travel, and air ride bags, height control valve linkages, and air line routing should be inspected for chafe points before the first heavy hook.