Cat C9.3B

Industrial Diesel Engines - Highly Regulated

About the Cat C9.3B


The Cat® C9.3B Industrial Diesel Engine is offered in ratings ranging from 250-340 bkW (335-456 bhp) @ 1800-2200 rpm. These ratings meet U.S. EPA Tier 4 Final and EU Stage V emission standards. The C9.3B engines are ideal choices to power applications in agriculture, aircraft ground support, construction, forestry, general industrial, material handling, and mining.


Power Rating
Minimum Power 250 bkW
Maximum Power 340 bkW
Rated Speed 1800-2200 rpm
Emission Standards
Emissions U.S. EPA Tier 4 Final and EU Stage V Nonroad Emission Standards.
Engine Configuration In-Line 6, 4-Stroke-Cycle Diesel
Bore 115 mm (4.53 in)
Stroke 149 mm (5.87 in)
Displacement 9.3 L (567.5 in³)
Aspiration Turbocharged-Aftercooled (TA)
Compression Ratio 17.0:1
Combustion System Direct Injection
Rotation from Flywheel End Counterclockwise
Cooling System - Capacity 22 L (23.6 qts)
Lube System - Refill 30 L (31.7 qts)
Engine Dimensions - Approximate
Height 1068 mm (42 in)
Length 1125 mm (44.3 in)
Weight - Net Dry - Basic Operating Engine Without Optional Attachments 865 kg (1907 lb)
Width 791 mm (31.1 in)
Aftertreatment Dimensions - Approximate
Height 432 mm (17.0 in)
Length 925 mm (36.4 in)
Weight 96 kg (211 lb)
Width 694 mm (27.3 in)


Fuel Efficiency

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


Exceptional power density enables you to use a smaller displacement engine than previously, and optimize the installation in your application. Fully configurable engine and compact aftertreatment minimize package size. Ideal for equipment with narrow engine compartments. Aftertreatment installation flexibility to meet all applications - including engine and remote mount options. Industrial Power Unit (IPU) available from factory to avoid significant design, validation and manufacturing costs.

Low Cost Maintenance

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 V. The S·O·S℠ 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.

Reliable, Quiet and Durable Power

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.

World-class Product Support Offered Through Global Cat Dealer Network

World-class Product Support Offered Through Global Cat Dealer Network
  • Scheduled maintenance, including SOS℠ 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 Final, Stage V Aftertreatment Features

Tier 4 Final, Stage V Aftertreatment Features
Regeneration. Maximum uptime with transparent aftertreatment regeneration, eliminating the need for operator interaction.
Service. Service: Minimum 5000 hour service interval for DPF / PETU filters.
PETU DEF capacity up to 93.7 liters (24.7 U.S. gallons)

Enhanced Electronics

Enhanced Electronics
  • The C13B is equipped for the future with the latest technology from a single on engine ECM.
  • 2 wire Ethernet connection allows for simpler, faster installation and allows for remote service and software flash.
  • 12 V and 24 V available.

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