Cat Trucks For Sale

Spec choices drive value on Cat trucks, especially axle layout and wheelbase. Set-forward front axles help meet bridge laws in states that reward bumper-to-axle length, popular for dump and mixer work. Set-back axles tighten turning radius for urban roll-off or snow routes. Many CT660 and CT680 chassis were ordered with heavy front axles in the 16k to 20k range and tandems from 40k to 58k, with full-locking diffs and vocational suspensions like Hendrickson for better traction and stability. Pay attention to frame rating and whether the truck is single or double frame if you plan to hang a high-center-of-gravity body or pull a lowboy.

Powertrains are built for vocational duty. Cat-branded on-highway models were commonly spec’d with mid to high 300s up to 500 plus horsepower and 1,550 to 1,850 lb-ft torque, paired to Eaton Fuller manuals from 8LL to 18 speed or Allison 4000 series automatics. Gear ratios in the mid 4s are common for off-road launch and gradeability; highway-oriented tractors trend lower numerically for fuel economy. Most units use modern aftertreatment with DPF and, on many specs, SCR with DEF. Verify DEF system layout, tank capacity, and service history if you run long cold seasons or remote jobsites.

Caterpillar vocational trucks, also known as Cat trucks, were engineered for body integration. Expect clean back-of-cab packaging, multiple PTO options, robust cooling modules, and 34 in frame rail spacing that plays well with dump bodies, mixers, water tanks, knucklebooms, or refuse packers. Common vocational features include heated power mirrors, in-cab upfitter switch banks, body-builder wiring, heavy front tow provisions, and choices of steel or aluminum wheels with 11R22.5 or 11R24.5 tires. Drum brakes dominate in earlier builds; some later tractors and severe-service specs add air disc brakes on steer for fade resistance.

For buyers comparing Cat CT660, CT680, and related severe-service variants, focus on application fit and lifecycle cost. Review maintenance records for the emissions system, cooling package, and PTO usage hours, not just odometer miles. Inspect frame liners for corrosion between rails, suspension bushings for play, and driveline slip joints on trucks that lived off-road. Mixer and refuse duty cycles reward Allison automatics; lowboy and heavy haul often benefit from 13 or 18 speed manuals with deep reduction. Typical GCWR spans from standard 80,000 lb road legal up to permitted heavy haul depending on spec. Parts support remains strong through the Caterpillar dealer network and component suppliers for engines, transmissions, axles, and brakes, which helps control downtime on older fleets.