2024 Kenworth T880

Duty cycle profile, 363k miles on a daycab points to steady vocational or regional turns with frequent in and out of the seat, expect more brake, tire, and steering wear than an equivalent highway sleeper. Identification, VIN 1XKZDP9X0RJ348798 and stock 0631110 are the key tags to match against service history, build sheet, and any warranty or campaign work. Powertrain documentation, engine family, transmission model, axle ratio, and any PTO or wet kit provisions are not listed, so application fit cannot be pinned down beyond general daycab work. ECM information is blank, plan on pulling an ECM report for total engine hours, idle percentage, fault history, and aftertreatment status, then compare hours to mileage to spot heavy idle or low speed cycles. Chassis touchpoints, frame rails and crossmembers should be checked for vocational stress signs like flange cracking, added holes, or rust jacking around fasteners. Fifth wheel, slider rails, and air lines should be inspected for jaw wear, air leaks, and evidence of dry plate operation. Cab interior, seat base, pedal pads, steering wheel, and door hinges typically show the true duty cycle on higher mile daycabs, use that wear pattern to validate the odometer and maintenance cadence.