2023 Kenworth T680

Duty cycle shows up in the odometer, 353,000 miles points to steady highway time with the kind of wear you typically see on driveline joints, steer components, and brake hardware rather than stop and go body damage. Condition is used, so plan on verifying service history, oil sample trends if available, and whether the mileage was accumulated under a single fleet maintenance program or mixed ownership. Powertrain details are not provided, so the inspection focus should be on what can be confirmed in the yard, cold start behavior, blow by at the breather, coolant condition, and any active fault history pulled from the dash and diagnostic port. ECM information is not listed, so a proper evaluation includes reading engine hours, idle percentage, regen history if applicable, and checking for any derate events or recurring aftertreatment codes. Frame rails and crossmembers should be checked for straightness, corrosion at fastener points, and any signs of added holes or bracket changes from prior spec changes. Fifth wheel condition matters at this mileage, look for jaw wear, top plate grooving, slider rail play if equipped, and air line routing for rub points. Cab interior and sleeper areas tend to tell the truth about duty cycle, inspect seat base play, pedal pad wear, steering wheel shine, and bunk hardware. Electrical and air systems should be verified with a full air build and leak down test, HVAC operation, and a check of battery cables, grounds, and harness chafe points. Serial number: 1XKYDP9X1PJ239033, stock number: 0629769.