2020 Kenworth T680

Duty cycle suggests a highway tractor with moderate miles for its age, typical of long-haul or regional lanes where idle time is usually lower than vocational work. Mileage level points to inspection focus on tires, brakes, coolant condition, and aftertreatment history, plus verification of any recent PM intervals. Powertrain details are not provided, so engine family, transmission model, and axle ratio should be confirmed off the VIN build sheet and dash tags before matching it to a specific application. ECM data is listed as blank, so an ECM pull is recommended to verify total engine hours, idle percentage, cruise usage, and any active or inactive fault history that would indicate sensor, EGR, DPF, or DEF dosing issues. Frame rails and crossmembers should be checked for straightness, corrosion at fastener points, and any signs of prior repairs around suspension hangers and the fifth wheel area. Fifth wheel condition should be verified for jaw wear, top plate grooving, and slider operation if equipped. Cab interior wear points include driver seat base play, pedal pad wear, steering wheel shine, and sleeper trim condition, all of which help validate the stated mileage. Cooling stack cleanliness, charge-air cooler boots, and belt drive components are common walkaround items, along with air system health checks for compressor cut-in and air loss rate. Identification numbers for records include VIN 1XKYD49X7LJ400252 and stock 0632808.