The CT680 Vocational Truck

If you’re hauling heavy loads or working in extreme conditions, you’ll appreciate the Cat CT680 Vocational Truck’s rugged durability and industrial styling—with the versatility to mount the attachments you need to get the job done.



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CT680 Specifications


Cat CT13 Engine

  • Ratings from 410-475 bhp & 1,450-1,700 lb-ft peak torque
  • Advanced air management system
  • High-pressure, common-rail fuel system
  • Dual sequential turbochargers & high-pressure injection system
  • Highly efficient Selective Catalytic Reduction (SCR) solution
  • Single Electronic Control Module (ECM)
  • Easy-access systems & components
  • Compacted graphite iron block
  • Fluid-free head gasket

Cat CX31 Automatic Transmission

  • Proven track record in vocational applications
  • Full power shifts & quick acceleration
  • Ideal speed & torque combinations for improved fuel economy
  • Two side PTO locations & Cat exclusive rear PTO
  • Six forward speeds & one reverse speed
  • Other options: Manual & Ultrashift® PLUS Vocational Transmissions built by Eaton


  • Meritor & Dana
  • 6x4 & 8x6 configurations
  • Tandems – Dana Spicer & Meritor 40,000-70,000 lbs. standard track
  • Front axle – Meritor 12,000-20,000 lbs.

Front Suspension

  • Parabolic taper leaf with shock absorbers for smoother ride
  • Optional two-stage multi-leaf shackle type with shocks

Rear Suspension

  • Hendrickson offerings: HMX, HAS, RT, RS, R, PAX
  • Chalmers: standard and high articulation
  • Capacities from 40,000-85,000 lbs.


  • AIR Dual System for day-cab & tractor configurations
  • Disc brakes for tractor configuration 16,000 lbs. & above front axle rating
  • Bendix anti-lock brake system, available with full vehicle wheel control system (four- or six-channel) & optional automatic traction control
  • All systems meet federal stopping distance requirement
  • Optional Haldex slack adjuster

Fuel Tanks

  • 80-, 100- & 120-gallon capacities available
  • 9.5-gallon diesel exhaust fluid tank
  • Single-left, dual under cab, or back of cab options available
  • Aluminum alloy construction
  • 24" or 26" tank options available
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HOLT Truck Centers has the service bays, specialized tooling and technical experts to tackle all major systems and components, including brakes, drivelines and transmissions. HOLT has 74 dedicated truck engine service bays in 8 full-service truck facilities, supported by the HDA Truck Pride® parts network of over 60 authorized truck engine parts and service dealers in South Texas, providing bumper-to-bumper truck service and maintenance on most truck makes and models. We can diagnose and repair all your performance and power concerns. HOLT Truck Center also is the authorized dealer for Caterpillar® parts in 118 counties in Texas.

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