Used Kenworth Box Trucks For Sale
Find used Kenworth box trucks, from T270/T370 to K270 cabovers. Compare 24-26 ft bodies, liftgates, PX-7/PX-9 power, Allison automatics, GVWR and specs.
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About Used Kenworth Box Trucks
Kenworth builds durable straight trucks on medium-duty platforms that share heavy-duty DNA. Common conventional models include T270 and T370, with newer naming moving to T180 and T280. Cabover K270 and K370 maximize visibility and turning radius for city routes. Powertrains typically pair PACCAR PX-7 at 200 to 300 hp or PX-9 at 260 to 350 hp with Allison 2000 or 3000 Series automatics; manuals and Eaton automated options exist but are less common in stop-and-go service. Air ride rear suspensions protect freight and drivers, while air disc brakes and stability control improve stopping and uptime. Engines from 2010 and newer use DEF SCR emissions systems, which generally reduce active regens compared to 2007 to 2009 DPF-only trucks.
Body construction and interior fit-out make or break productivity. FRP panels resist abrasion but add weight; aluminum sheet-and-post saves weight and can be repaired in sections. E-track or logistics posts at multiple heights speed load securement, and scuff liners in 12 to 24 in heights keep walls intact. Roll-up doors load fast but slightly reduce opening height; swing doors seal better and are preferred for food and high-value freight if space allows. A translucent roof brightens the box for faster picks, though it can add heat in southern climates. Liftgates are critical in retail delivery; tuck-under designs keep dock access and come in 2,500 to 3,300 lb ratings, while rail gates handle bulky freight up to 4,500 lb. Verify floor rating, nose and corner cap condition, roof seams, and door tracks for smooth operation and no water intrusion.
Total cost of ownership hinges on spec matching and condition. For urban work, a K270 cabover or short-wheelbase T270 with Allison automatic and 22.5 low-profile tires reduces driver fatigue and curb strikes. Regional routes benefit from PX-9 power, 3.55 to 4.10 axle ratios, and larger fuel tanks. Evaluate hours in addition to miles, liftgate pump and cylinder health, and aftertreatment history. Air ride cabs and premium seating reduce driver turnover, and Kenworth’s multiplex wiring and TruckTech+ telematics simplify diagnostics. For California operation, prioritize 2010 or newer engine-year trucks to align with CARB Truck and Bus rules. Choose the configuration that fits your freight density, stop count, and loading environment to keep a used Kenworth box truck productive for the long haul.
Frequently Asked Questions
What GVWR should I choose for a used Kenworth box truck?
If you want to avoid CDL requirements, a 26,000 lb GVWR truck provides solid payloads for most parcel, appliance, and retail routes. If your freight is dense or you run a liftgate all day, a 33,000 lb Class 7 adds several thousand pounds of payload headroom and usually includes air brakes and heavier axles. CDL requirements are based on GVWR, not air brakes alone.
Which Kenworth models are common for box bodies and how do they differ?
T270 and T370 are the classic conventional platforms, with T180 and T280 as the newer equivalents. They offer a smoother ride at highway speed and broader power options. K270 and K370 are low-cab-forward designs that shine in cities with a tight turning circle and excellent curbside visibility, trading off some highway ride comfort versus conventionals.
What engine and transmission pairings work best for delivery routes?
PACCAR PX-7 at 220 to 260 hp with an Allison 2200 or 2500 automatic is a proven choice for urban and suburban delivery, balancing fuel economy and start-stop durability. Heavier routes or hilly regions benefit from PX-9 at 300 hp with an Allison 3000. Manuals can save on upfront cost but are slower and harder on clutches in dense traffic.
What should I inspect on the box body and liftgate before buying used?
Look for water stains on the front wall, roof seam repairs, and soft spots in the floor near the rear threshold. Confirm door rollers track smoothly and seals are intact. Check e-track integrity and scuff liner damage. On liftgates, inspect platform pin wear, hinge cracks, hydraulic leaks, pump noise, wiring corrosion, and verify rated capacity and cycle operation under load.
Are used Kenworth box trucks with older emissions systems a concern?
2007 to 2009 DPF-only engines can have more frequent active regens in stop-and-go duty. 2010 and newer trucks add DEF SCR, which generally lowers soot load and improves reliability. For California and many fleets with stricter sustainability goals, a 2010 or newer engine year aligns better with compliance and resale value.

