New | Cat® C7.1 ACERT™ Industrial Power Unit

The C7.1 ACERT™ 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 Rating156 bhp
Maximum Rating275 bhp
Rated Speed116-205 bkW/156-275 bhp @ 2200 rpm, 129 bkW/173 bhp @ 2500 rpm
Emission Standards
EmissionsChina Stage II, U.S. EPA Tier 3 Equivalent, EU Stage IIIA Equivalent. Designed to meet China Stage III emission standards.
Engine ConfigurationInline 6, 4-Stroke-Cycle Diesel
Bore105 mm (4.1 in)
Stroke135 mm (5.3 in)
Displacement7.01 L (427.7 in³)
AspirationTurbocharged Aftercooled (TA)
Compression Ratio16.8:1
Combustion SystemDirect Injection
Rotation (from flywheel end)Counterclockwise
Power Unit Dimensions (Approximate. Final dimensions dependent on selected options)
Length1728 mm (68 in)
Width788 mm (31 in)
Height1140 mm (44.8)
Weight - Net Dry (Standard configuration without oil, cooling, clutch, compressor, A/C)788 kg (1737 lbs)

Meets China Stage Ii, U.s. Epa Tier 3 Equivalent, Eu Stage Iiia Equivalent Emission Standards. Available Using U.s. Epa Flex Provisions And Eu Flex Provisions, 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.

Simple And Efficient Turbocharger Provides Optimal Air Management And Improved Fuel Efficiency.

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

Cat® Engines Are Designed To Accommodate B20 Biofuel. Your Cat Dealer Can Provide More Information Regarding Fuel And Oil.

Industry Leading Range Of Factory Configurable Ratings And Options For Agricultural, Material Handling, Construction, Mining, Aircraft Ground Support, And Other Industrial Applications.

Exceptional Power Density Enables Standardization Across Numerous Applications. Multiple Installation Options Minimize Total Package Size. Ideal For Equipment With Narrow Engine Compartments.

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

  • scheduled Maintenance, Including S•o•s℠ 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
  • Standard air cleaners
Control System
  • Full electronic control system, all connectors and wiring looms waterproof and designed to withstand harsh off-highway environments
  • Flexible and configurable software features and well-supported SAE J1939 CAN bus enables highly integrated machines
Cooling System
  • Top tank temperature 108° C (226° F) as standard to minimize cooling pack size
  • 50:50 water glycol mix
  • Cooling system designed for operation in 48 C (118 F) ambient.
Flywheels and Flywheel Housing
  • Wide choice of drivetrain interfaces, including SAE No. 1, SAE No. 2, and SAE No. 3 configurations
Fuel System
  • Electronic high pressure common rail
  • ACERT Technology
  • Innovative filter design to ensure maximum protection of the engine
Lube System
  • Wide choice of sumps for different applications
Power Take Off
  • SAE A or SAE B flanges on left-hand side. Right-hand side twin PTO also available. Engine power can also be taken from the front of the engine on some applications.
  • Paint: Caterpillar yellow



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