2023 Kenworth T680

Category, Trucks. Mileage profile, 681,316 miles points to a highway duty cycle with the usual long-haul wear pattern, driveline slack, suspension bushings, and aero body hardware being the first places to show age. Serial 1XKYD49X2PJ233711, stock 0635236. Powertrain, engine and transmission details are not provided, so verification should focus on ECM hours, idle percentage, aftertreatment history, and any active or stored fault codes before assigning an application. Cooling stack condition, charge-air plumbing, and crankcase ventilation routing are worth a close look at this mileage, along with driveline angles and carrier bearing support if equipped. Walkaround, frame rails and crossmembers should be checked for straightness, corrosion at fastener points, and any added holes from prior equipment. Fifth wheel jaws, slide rails, and air line routing tell a lot about coupling habits and maintenance, watch for jaw wear, dry plate scoring, and air leaks at the gladhand area. Cab upholstery, sleeper trim, and dash switchgear typically show the real duty cycle, inspect seat bases, bunk hardware, HVAC performance, and door seal integrity, then finish with steer tire wear pattern, brake lining remaining, and air suspension height control response.