Used 2014 Kenworth Trucks For Sale

Engine choice drives most of the value in used 2014 Kenworth trucks. The PACCAR MX-13 12.9L is common in the 380-500 hp range with 1450-1850 lb-ft, valued for quiet operation and fuel efficiency. Cummins ISX15 shows up in higher-output specs, often 450-550 hp with 1750-2050 lb-ft, preferred for heavy loads and mountain routes. These model-year engines use EPA 2010 aftertreatment with SCR, DPF and EGR, so service history on regens, DPF cleanings, NOx sensors and dosing components matters. Well-maintained systems run clean and efficient; neglected systems show frequent regens, fault codes and higher fuel burn. Verify DEF quality, injector/doser function and any documented DOC/DPF clean or replace intervals aligned with duty cycle.

Model selection should match freight and terrain. The 2014 T680 is the aero long-haul flagship, typically spec’d with mid- or high-roof 52- or 76-inch sleepers, side skirts and roof fairings for lower drag. T660 units are similar but from the prior aero generation, often priced lower with slightly less cab volume. W900 appeals to owner-operators favoring long-hood serviceability and resale in specialized or heavy haul, trading aerodynamics for durability and classic ergonomics. For construction, dump, mixer and lowboy, the T880 and T800 dominate with heavier frames, set-forward or set-back steer options, full locking diffs and 40k-46k rears; look for AG460, Hendrickson or Chalmers vocational suspensions, double-frame or high-RBM specs if you run off-road.

Drivetrain choices in 2014 range from Eaton Fuller 10/13/18-speed manuals to UltraShift Plus automated manuals, with Allison automatics common in vocational builds. Axle ratios around 2.64-3.36 favor highway mpg with overdrive transmissions; 3.55-4.10+ target stop-and-go or off-road torque. Some T680/T660 units were spec’d 6x2 for weight and fuel savings, which can be efficient on dry pavement but requires traction management in snow or jobsites. Brakes are usually drums, with air-disc fronts or all-disc as desirable options for shorter stops and easier maintenance. Useful fuel-savers include low-rolling-resistance tires, auto-tire inflation, cab/sleeper aero packages, APUs and battery HVAC. Wheelbase affects both ride and maneuverability; long-haul sleepers often run 220-244 inches, while tighter regional routes benefit from shorter wheelbases.

For any used 2014 Kenworth, assess total lifecycle cost. Pull an ECM download to confirm miles and hours, check for active fault codes and review oil analysis if available. Inspect the aftertreatment history, looking for DPF cleaning or replacement dates, SCR/DEF repairs, and documented regens; hot environments and urban duty shorten intervals compared to steady highway. Evaluate clutch life, transmission service records, kingpins, suspension bushings, airbags, brake lining thickness and fifth-wheel wear. Check alignment and tire wear patterns, frame rails for corrosion or prior repair, and cab electronics including Kenworth NavPlus and camera integration. 2014 engines meet CARB Truck and Bus requirements that call for 2010 or newer engines, and the J1939 databus supports plug-in ELDs and telematics. In cold regions, prioritize block heaters, fuel heater-equipped filter bases, robust batteries and 3-stage engine brakes for control on grades.