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Industrial Diesel Power Units - Lesser Regulated & Non-Regulated

Cat® industrial engines are ready for your application. These engines deliver the unsurpassed reliability, durability, fuel efficiency, and low cost of ownership you have come to expect from Caterpillar. And our world-class product support will never let you down. All this adds up to a powerful advantage for you. Every Cat industrial diesel and gas engine comes with 75 years of engine experience. Our world-class product line of high-speed and medium-speed industrial engines in a wide range of applications offer power solutions for the most demanding installations and the harshest environments. With power options from 8.2 to 6,100 bkW (11 to 8,180 bhp), Cat industrial diesel and gas engines offer the widest power range in the industry.

Cat® C6.6 ACERT™ Industrial Power Unit

The Cat® C6.6 ACERT™ Industrial Power Unit is offered in ratings ranging from 129.5-168 bkW (173.7-225.3 bhp) @ 1800-2500 rpm. These ratings meet U.S. EPA Tier 3 equivalent, EU Stage IIIA equivalent emission standards. Conveniently pre-configured for a wide range of applications, the Cat® Industrial Power Unit is a complete power package containing a radiator, flywheel, alternator and alternator wiring completely pre-assembled for fast, straightforward installation in a number of OEM, customer and packager applications. These fuel efficient units are ready made for irrigation, industrial, mining and other pump applications.

  • Specification Summary

  • Minimum Rating129.5 bkW
  • Maximum Rating168.0 bkW
  • Frequency2200 rpm
  • EmissionsU.S. EPA Tier 3 Equivalent, EU Stage IIIA Equivalent
  • Engine ConfigurationInline 6, 4-Stroke-Cycle Diesel

Product Details

Power Rating

Minimum Rating 129.5 bkW
Maximum Rating 168.0 bkW
Frequency 2200 rpm

Emission Standards

Emissions U.S. EPA Tier 3 Equivalent, EU Stage IIIA Equivalent


Engine Configuration Inline 6, 4-Stroke-Cycle Diesel
Bore 105 mm (4.1 in)
Stroke 127 mm (5.0 in)
Displacement 6.6 L (402.8 in³)
Aspiration Turbocharged Aftercooled (TA)
Compression Ratio 16.2:1
Combustion System Direct Injection
Rotation (from flywheel end) Counterclockwise

Power Unit Dimensions (Approximate. Final dimensions dependent on selected options)

Length 1708 mm (67.23 in)
Width 767 mm (30.2 in)
Height 1144 mm (45 in)
Weight - Net Dry (Standard configuration without oil, cooling, clutch, compressor, A/C) 709 kg (1563 lb)
  • Air Inlet System
    •  Mounted air filter and turbocharger
  • Control System
    •  Alternator 12 volt 14 amp
    •  Starter motor 12 volt
    •  Glow plug starting aid
  • Alternator 12 volt 14 amp
    • Starter motor 12 volt
      • Glow plug starting aid
        • Cooling System
          •  Fan (pusher or puller)
          •  Fan drive
          •  Radiator
          •  Water pump
        • Flywheels and Flywheel Housing
          •  Choice of SAE No. 2 or SAE No. 3 flywheel housing
        • Fuel System
          •  Electronic high pressure common rail
          •  ACERT™ Technology
          •  Innovative filter design to ensure maximum protection of the engine
        • Lube System
          •  Oil cooler
          •  Lube oil filter
          •  Timing case oil filler
        • Power Take Off (PTO)
          •  SAE A or SAE B front PTO (142/280 N?M)
        • General
          •  Paint: Caterpillar yellow, with optional colors available at request
        • Paint: Caterpillar yellow, with optional colors available at request

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