2021 Kenworth W990

Category, Truck (conventional sleeper). Mileage profile, 325,000 miles points to steady highway duty cycles rather than short-stop vocational work, with the usual watch items being front-end wear, driveline u-joints, and cooling system cleanliness from sustained load and heat. Powertrain data, engine, transmission, axle ratio, and ECM status are not provided, so application fit cannot be tied to horsepower, gearing, or shift package. Verification should include ECM hours and idle percentage, active and inactive fault history, aftertreatment health if equipped, and any evidence of derate events. Frame rails, check for straightness at the rear suspension hangers and around any drilled holes, then inspect crossmember fasteners and signs of corrosion at clamp points. Fifth wheel, measure jaw wear and inspect the top plate for heat checking and dry spots, then confirm slider travel if applicable. Cab upholstery and sleeper trim, look for seat base play, pedal pad wear that matches the odometer, HVAC performance, and water intrusion at door seals and sleeper boot, with a close look at steering wheel shine and switchgear wear for consistency.