Financing & Insurance
See our Current Offers
View Product Downloads
Please answer to continue. Enter a valid email address.


The Cat® C9.3 ACERT™ Industrial Diesel Power Unit is offered in ratings ranging from 224-298 bkW (300-400 bhp) @ 1800-2200 rpm and meet U.S. EPA Tier 4 Final, EU Stage IV 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 Power 300.0 bhp 224.0 bkW Less
Maximum Power 400.0 bhp 298.0 bkW Less
Frequency 1800-2200 rpm 1800-2200 rpm Less

Emission Standards

Emissions U.S. EPA Tier 4 Final, EU Stage IV U.S. EPA Tier 4 Final, EU Stage IV Less


Engine Configuration Inline 6, 4-Stroke-Cycle-Diesel Inline 6, 4-Stroke-Cycle-Diesel Less
Bore 115 mm (4.53 in) 115 mm (4.53 in) Less
Stroke 149 mm (5.87 in) 149 mm (5.87 in) Less
Displacement 9.3 L (567.5 in³) 9.3 L (567.5 in³) Less
Aspiration Turbocharged Aftercooled (TA) Turbocharged Aftercooled (TA) Less
Compression Ratio 17:1 17:1 Less
Rotation (from flywheel end) Counterclockwise Counterclockwise Less
Cooling System Capacity 64 L (68 qt) 64 L (68 qt) Less
Lube System (refill) 30 L (31.7 qt) 30 L (31.7 qt) Less

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

Length 1845-2042 mm (72.6-80.4 in) 1845-2042 mm (72.6-80.4 in) Less
Width 1094-1118 mm (43.1-44 in) 1094-1118 mm (43.1-44 in) Less
Height 1554-1741 mm (61.2- 68.5 in) 1554-1741 mm (61.2- 68.5 in) Less
Weight - Approximate, Net Dry (Standard configuration without oil, cooling, clutch, compressor, A/C) 1678-1839 kg (3699-4055 lb) 1678-1839 kg (3699-4055 lb) Less

Aftertreatment Dimensions (Approximate. Final dimensions dependent on selected options)

Diameter 304.8-330.2 mm (12-13 in) 304.8-330.2 mm (12-13 in) Less
Width 714.4-870 mm (28.12-34.25 in) 714.4-870 mm (28.12-34.25 in) Less
Height 392.21-570 mm (15.44-22.4 in) 392.21-570 mm (15.44-22.4 in) Less
Weight 130-212 kg (287-467 lb) 130-212 kg (287-467 lb) Less

PETU Dimensions (Tier 4 Final, Stage IV Only)

Volume Capacity 48.4 L (51.1 qt) 48.4 L (51.1 qt) Less
Length 854 mm (33.6 in) 854 mm (33.6 in) Less
Width 287 mm (11.3 in) 287 mm (11.3 in) Less
Height 551 mm (21.7 in) 551 mm (21.7 in) Less
Weight 19.42 kg (42.8 lb) 19.42 kg (42.8 lb) Less


Designed to meet U.S. EPA Tier 4 Interim or U.S. EPA Tier 4 Final, EU Stage IIIB or EU Stage IV emission standards.

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.

High Performance

Simple and efficient turbocharger with balance valve provides optimal air management and improved fuel efficiency.

Fuel Efficiency

Fuel consumption optimized to match operating cycles of a wide range of equipment and applications.

Fuel & Oil

Tier 4 Interim or Tier 4 Final, Stage IIIB or Stage IV engines require Ultra Low Sulfur Diesel (ULSD) fuel containing a maximum of 15 ppm sulfur, and new oil formulations to support the new technology. Cat® engines are designed to accommodate B20 biofuel. Your Cat dealer can provide more information regarding fuel and oil.

Broad Application Range

Industry leading range of factory configurable ratings and options for agricultural, materials- handling, construction, mining, forestry, waste, and other industrial applications.


Exceptional power density enables standardization across numerous applications. Available factory-installed configurations: full package, including radiator and Clean Emissions Module (CEM); package with CEM, but no radiator; and package with radiator installed, but CEM shipped loose.

Low Cost Maintenance

Worldwide service delivers ease of maintenance and simplifies the servicing routine. If applicable, minimum 5000-hour diesel particulate filter (DPF) ash service interval enables low-cost maintenance. Capable of optimal oil change intervals of up to 500-hours, depending on rating, application, operating conditions, and maintenance practices. Engine B10 life up to 10000 hours for Tier 4 Final, Stage IV. The S·O·SSM program is available from your Cat dealer to determine oil change intervals and provide optimal performance.


Every Cat engine is manufactured to stringent standards in order to assure customer satisfaction.

World-class Product Support Offered Through Global Cat Dealer Network

  • 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

Tier 4 Interim, Stage IIIB Aftertreatment Features

Regeneration. Cat Regeneration System maximizes fuel efficiency during regeneration. Flexible regeneration options maximize uptime.

Mounting. Remote installation options provide OEM flexibility for many applications, including horizontal and vertical mounting, with and without muffler.
Service. Minimum 5000 hour DPF ash service interval.

Tier 4 Final, Stage IV Aftertreatment Features

Regeneration. Cat Regeneration System maximizes fuel efficiency during regeneration. Transparent regeneration maximizes uptime. Aftertreatment life is twice as long as engine rebuild

Mounting. Industrial power units have standard horizontal mounting.
Service. Minimum 5000-hour diesel particulate filter ash service interval. PETU filter service is 5000 hours.

C9.3 ACERT™ Standard Equipment

Air Inlet System
  • Turbocharged
  • Air-to-Air Aftercooled
  • Mid-mount turbocharged system with front and rear exhaust configurations (Tier 4 Final, Stage IV)

Control System
  • Electronic control system
  • Over-foam wiring harness
  • Automatic altitude compensation
  • Power compensated for fuel temperature
  • Configurable software features
  • Engine monitoring system SAE J1939 broadcast and control
  • Integrated Electronic Control Unit (ECU)
  • Remote fan control

Cooling System
  • Vertical or RH thermostat outlet
  • Centrifugal water pump
  • Guidance on cooling system design available through your dealer to ensure equipment reliability

Flywheels and Flywheel Housing
  • SAE No. 1 and SAE No. 2 flywheel housings
  • Dual rear PTO configuration
  • Available SAE No. 1 power take off with optional SAE A, SAE B or SAE C power take off drives. Engine power can also be taken from the front of the engine with optional attachments. (Tier 4 Final, Stage IV).

Fuel System
  • Electronic high pressure common rail
  • Primary fuel filter
  • Secondary fuel filters
  • Fuel transfer pump
  • Electronic fuel priming

Lube System
  • Open crankcase ventilation system
  • Oil cooler
  • Oil filler
  • Lube oil filter
  • Oil dipstick
  • Gear driven oil pump
  • Choice of front, rear or center sumps
  • Open crankcase ventilation system with fumes disposal (optional OCV filter system) (Tier 4 Final, Stage IV)

Power Take Off (PTO)
  • SAE A, SAE B or SAE C power take off (PTO) drives. Engine power can also be taken from the front of the engine on some applications.

  • Vibration damper
  • Lifting eyes

U.S. EPA Tier 4 Interim, EU Stage IIIB Aftertreatment / Clean Emissions Control Equipment
  • Cat Regeneration System
  • Clean Emissions Module (CEM), consisting of Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC)
  • NOx Reduction System (NRS)
  • Flex pipe connection kit with 90° rotatable elbows to attach to Cat Regeneration System Inlet
  • Available in 12 volt or 24 volt systems

U.S. EPA Tier 4 Final, EU Stage IV Aftertreatment/ Clean Emissions Control Equipment
  • Cat Regeneration System
  • Clean Emissions Module (CEM), consisting of Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC)
  • Aftertreatment Electronic Control Unit (ECU)
  • NOx Reduction System (NRS)
  • Pump Electronic Control Unit (PETU)
  • Available in 12V or 24V systems
  • Selective Catalytic Reduction (SCR)

Cat® Dealer Service

Buy any piece of Cat® equipment and also get the full support and commitment of your local Cat Dealer.

Contact your local dealer
Financing & Insurance

You can count on Cat Financial to provide the best financial solutions, built just for you.

See our Current Offers
Engine Warranty Registration

We are committed to providing our customers with the finest products and product support available in the market today.

Register Today