Cat® C9.3B Industrial Diesel Engine

The Cat® C9.3B industrial diesel engine is offered in ratings rangingfrom 280-330 kW (375-443 hp). These ratings have been fuel optimized
for use in countries without any regulatory requirements for emissionstandards.

High Performance

The C9.3B delivers expanded capability with 19% more power and 16% more torque than the previous 8.8 liter platform for less regulated countries (comparison for IND-C rating).

Reliable, Quiet and Durable Power

The C9.3B engine leverages a core engine with over 200 million off-highway hours in the field and is manufactured in a world-class facility; assuring reliability, quiet operation and many hours of productive life.

Optimized Installation


  • The C9.3B for LRC offers platform commonality with the C9.3B for highly  regulated countries to reduce cost of installation and support a global customer base by sharing a common core engine, offering similar machine interfaces and controls architecture.

  • High power density, up to 33.3 kW/L (44.7 hp/L) gives original equipment manufacturers (OEMs)
        the ability to downsize their engine installation without sacrificing performance.

  • Fully configurable engine options and industrial power unit (IPU)  available from factory to avoid 
        significant design, validation, and manufacturing costs.

Low Cost Maintenance


  • Worldwide service delivers ease of maintenance and simplifies the servicing routine.

  • Standard service intervals of 500 hours under normal operating conditions.

  • The S•O•SSM program is available from your Cat dealer to optimize oil change intervals.

  • Ideal for high-hour applications over 10,000 hours.


    • Remote mount options for serviceable items such as oil and fuel filters.


Low Operating Costs

C9.3B development and calibration strategies  have yielded significant improvements in fuel 
consumption, minimizing the total cost of ownership.

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

Standard Equipment

Air Inlet System
  • Turbocharged: system with front and rear exhaust configurations
  • Air-to-Air Aftercooled
Control System
  • Configurable software features
  • Engine monitoring system SAE J1939 broadcast and control
  • Electronic control system with single on-engine ECM
  • Over-foam wiring harness
  • Automatic altitude compensation
Cooling System
  • Centrifugal water pump
  • Guidance on cooling system design available through your dealer to ensure equipment reliability
Flywheels and Flywheel Housing
  • Available SAE No. 1 and No. 2 flywheel/housings
Fuel System
  • Electronic high pressure common rail
  • Primary fuel filter
  • Secondary and tertiary fuel filters
  • Fuel transfer pump
  • Electronic fuel priming
Lube System
  • Open crankcase ventilation system (OCV) with fumes disposal (optional OCV filter system)
  • Oil cooler
  • Oil filler
  • Lube oil filter
  • Choice of front, rear or center sumps
  • Oil dipstick
  • Gear driven oil pump
  • Vibration damper
  • Lifting eyes
  • Paint: Caterpillar yellow, with optional colors available at request

Additional information

Offering Type

Power Rating - Maximum Power

310 kW ( 416 HP )

Power Rating - Maximum Torque

1810 Nm @ 1400 rpm ( 1335 lb-ft @ 1400 rpm )

Power Rating - Rated Speed

1800-2200 rpm

Power Rating - Minimum Power

230 kW ( 308 HP )

Emission Standards - Emissions

China Nonroad Stage III, Brazil MAR-1, UN ECE R96 Stage IIIA

General - Engine Configuration

Inline 6, 4-Stroke-Cycle Diesel

General - Bore

115 mm ( 4.5 in )

General - Stroke

149 mm ( 5.9 in )

General - Displacement

9.3 l ( 567.5 in³ )

General - Compression Ratio


General - Aspiration

Turbocharged Aftercooled (TA)

General - Combustion System

Direct Injection

General - Rotation from Flywheel End


General - Aftertreatment

Engine Dimensions - Approximate - Length

1125 mm ( 44 in )

Engine Dimensions - Approximate - Width

791 mm ( 31 in )

Engine Dimensions - Approximate - Height

1068 mm ( 42 in )

Engine Dimensions - Approximate - Weight - Net Dry - Basic Operating Engine Without Optional Attachments

865 kg ( 1907 lb )

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