2021 International LT625

Duty cycle shows up in the odometer, 439,483 miles points to highway and regional freight use rather than short-cycle vocational work. Serial 3HSDZTZR6MN073923 and stock 0635109 give you a clean reference for service history, recalls, and build data pulls. Powertrain details are not provided, so engine family, horsepower rating, transmission model, and axle ratio should be verified off the door tag and ECM report before matching it to a lane. ECM data is listed as blank, so an inspection should include a scan for active and inactive fault codes, aftertreatment health, regen history, and a check for any derate events. Frame rails and crossmembers are the first look items on a used sleeper at this mileage, watch for drilled holes, added brackets, rust scale at fasteners, and any signs of prior tow or recovery damage. Fifth wheel area should be checked for top plate wear, slider rail play, and air line routing chafe, with a close look at the apron contact zone for uneven grease patterns that can hint at suspension or alignment issues. Cab interior and sleeper condition will tell you how it was treated day to day, inspect seat base play, pedal wear, steering wheel shine, and bunk hardware. Cooling stack, charge air plumbing, and exhaust joints are common leak points at this age and mileage, so look for soot tracing, oil misting at CAC boots, and coolant residue around the surge tank and hose ends.