2024 Kenworth T680

Category, Trucks. Mileage profile points to sustained highway duty cycles, with wear typically showing up in driveline joints, wheel ends, cooling stack cleanliness, and cab touch points more than in vocational components. Serial 1XKYDP9X8RJ336894, stock 0634537, should be cross checked against service history for aftertreatment events, overhead set intervals, and any prior engine harness or sensor replacements. Powertrain details are not provided, so application fit comes down to verifying engine family, transmission model, and rear ratio on the VIN build sheet and door tag. ECM data is not listed, so an ECM pull is a must to confirm total engine hours, idle percentage, derate history, regen counts, and any active or inactive fault patterns that match the mileage. Frame rails deserve a straight sight line check for waviness, added holes, and corrosion at crossmember joints, with special attention around suspension hangers and any fifth wheel mount points. Fifth wheel should be inspected for jaw wear, top plate cracking, and slider rail condition if equipped. Cab upholstery and sleeper trim should be checked for high use wear, HVAC performance, and water intrusion at windshield and sleeper seams, with a close look at dash switches, seat bases, and door seals that usually show the real duty cycle at this mileage.