C4.4 ACERT™ Standard Equipment

Air Inlet System

  • Mounted air filter and turbocharger

Control System

  • Available in 12 volt or 24 volt systems
  • Starter motor 12V or 24V

Cooling System

  • Fan (pusher or puller)
  • Fan drive
  • Radiator
  • Water pump

Flywheels and Flywheel Housing

  • Flywheel
  • SAE No. 3 flywheel housing

Fuel System

  • Fuel filter
  • ACERT™ Technology

Lube System

  • Oil cooler
  • Lube oil filter
  • Timing case oil filler


  • Engine mounting brackets

Power Take Off (PTO)

  • SAE A or SAE B front PTO (142/280 NM)


  • Paint: Caterpillar yellow, with optional colors available at request

Select Units


The Cat® C4.4 ACERT™ Industrial Power Unit is offered in ratings ranging from 96.5 bkW (129.4 bhp) @ 2200 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.

Power Rating

  • Minimum Rating 129.4 BHP 96.5 bkW
  • Maximum Rating 129.4 BHP 96.5 bkW
  • Rated Speed 2200 rpm 2200 rpm

Emission Standards

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


  • Engine Configuration Inline 4, 4-Stroke-Cycle Diesel Inline 4, 4-Stroke-Cycle Diesel
  • Bore 105 mm (4.1 in) 105 mm (4.1 in)
  • Stroke 127 mm (5.0 in) 127 mm (5.0 in)
  • Displacement 4.4 L (268.5 in³) 4.4 L (268.5 in³)
  • Aspiration Turbocharged Aftercooled (TA) Turbocharged Aftercooled (TA)
  • Compression Ratio 16.2:1 16.2:1
  • Combustion System Direct Injection Direct Injection
  • Rotation from Flywheel End Counterclockwise Counterclockwise

Power Unit Dimensions - Approximate

  • Height 963 mm (37.9 in) 963 mm (37.9 in)
  • Length 1358 mm (53.5 in) 1358 mm (53.5 in)
  • Weight - Net Dry - Standard Configuration Without Oil, Cooling, Clutch, Compressor, A/C 520 kg (1146 lb) 520 kg (1146 lb)
  • Width 749 mm (29.5 in) 749 mm (29.5 in)

Reliable, Quiet and Durable Power

World-class manufacturing capability and processes coupled with proven core engine designs assure reliability, quiet operation, and many hours of productive life.

Fuel Efficiency

Fuel consumption optimized to match operating cycles of a wide range of equipment and applications while maintaining low operating costs.

World-class Product Support Offered Through Global Cat Dealer Network

  • Scheduled maintenance, including SOSSM sample
  • Customer Support Agreements (CSA)
  • Caterpillar Extended Service Coverage (ESC)
  • Superior dealer service network
  • Extended dealer service network through the Cat Industrial Service Distributor (ISD) program

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