New | Cat® C4.4 ACERT™ Industrial Power Unit

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 Rating129.4 bhp
Maximum Rating129.4 bhp
Rated Speed2200 rpm
Emission Standards
EmissionsU.S. EPA Tier 3 Equivalent, EU Stage IIIA Equivalent
Engine ConfigurationInline 4, 4-Stroke-Cycle Diesel
Bore105 mm (4.1 in)
Stroke127 mm (5.0 in)
Displacement4.4 L (268.5 in³)
AspirationTurbocharged Aftercooled (TA)
Compression Ratio16.2:1
Combustion SystemDirect Injection
Rotation (from flywheel end)Counterclockwise
Power Unit Dimensions (Approximate. Final dimensions dependent on selected options)
Length1358 mm (53.5 in)
Width749 mm (29.5 in)
Height963 mm (37.9 in)
Weight - Net Dry (Standard configuration without oil, cooling, clutch, compressor, A/C)520 kg (1146 lb)

Meets U.s. Epa Tier 3 Equivalent, Eu Stage Iiia Equivalent Emission Standards. Available Using U.s. Epa Flexibility Or Eu Flexibility, And For Other Regulated And Non-regulated Areas.

World-class Manufacturing Capability And Processes Coupled With Proven Core Engine Designs Assure Reliability, Quiet Operation, And Many Hours Of Productive Life.

Fuel Consumption Optimized To Match Operating Cycles Of A Wide Range Of Equipment And Applications While Maintaining Low Operating Costs.

Every Cat Engine Is Manufactured To Stringent Quality Standards In Order To Assure Customer Satisfaction.

Convenient Positioning Of Service Points On Right-hand Side For Easy Accessibility. Service Intervals Are 500 Hours As Standard.

  • scheduled Maintenance, Including S•o•ssm 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

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



Other Models in this Category

Hawthorne Power Systems Logo

Why Cat is Better. Machine Comparison

With only a few days notice, we were able to get the emergency system working properly. Hawthorne Cat provided great leadership and excellent field support.
Mark Cripe
Helix Electric

San Diego - Power
Steve Jamison
Power Systems Sales Manager
858.376.6821 office
858.688.0083 mobile

Phillip J. Smith (PJ)
Service Manager - CSA Group/Truck Shop
858.376.6874 office
858.688.0134 mobile

Dan Hixon
Field Service Manager
858.376.6822 office
858.663.4652 mobile

Paul Karpf
Rental Department Manager
858.376.6888 office
858.688.0039 mobile

Tom Bonham
Product Support Sales &
Advanced Electrical Services Manager
858.376.6898 office
442.248.2108 mobile

Hawaii – Power
Cliff Yuen
Power Systems Sales Manager
808.676.0322 office
808.349.7767 mobile

Travis Tilton
General Service Manager
808.676.0314 office
808.864.1903 mobile

Bobby Fields
Rental Developer
808.676.0267 office
808.368.5445 mobile

Guam – Power
Myver Hecita
Power Systems Rental &
Sales Representative
671.649.4241 office
671.898.2740 mobile

Jimmy Cruz
Engine Service Manager
671.649.4216 office
671.488.2821 mobile