The Cat® C11 ACERT™ Industrial Diesel Engine is offered in ratings ranging from 242-336 bkW (325-450 bhp) @ 1800-2100 rpm. These ratings meet China Stage II, EPA Tier 3 equivalent, and EU Stage IIIA equivalent emission standards. Industries and applications powered by C11 ACERT engines include Agriculture, Ag Tractors, Aircraft Ground Support, Bore/Drill Rigs, Chippers/Grinders, Combines/Harvesters, Compactors/Rollers, Compressors, Construction, Cranes, Crushers, Dredgers, Forestry, Forklifts, General Industrial, Hydraulic Power Units, Irrigation Equipment, Loaders/Forwarders, Material Handling, Mining, Mobile Earthmoving Equipment, Paving Equipment, Pumps, Shovels/Draglines, Specialty Ag Equipment, Sprayers, Surface Hauling Equipment, Trenchers and Underground Mining Equipment.


Power Rating
Minimum Power 325 BHP
Maximum Power 450 BHP
Rated Speed 1800-2100 rpm

Emission Standards
Emissions China Stage II, U.S. EPA Tier 3 Equivalent, EU Stage IIIA Equivalent

Engine Configuration Inline 6, 4-Stroke-Cycle Diesel
Bore 130 mm (5.12 in)
Stroke 140 mm (5.51 in)
Aspiration Turbocharged Aftercooled (TA)
Displacement 11.1 L (677.36 in³)
Compression Ratio 17.2:1
Combustion System Direct Injection
Rotation from Flywheel End Counterclockwise

Engine Dimensions - Approximate
Height 1186 mm (46.7 in)
Length 1203 mm (47.4 in)
Weight - Net Dry - Basic Operating Engine Without Optional Attachments 930 kg (2050 lb)
Width 1054.4 mm (41.5 in)

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.

Broad Application Range

Industry leading range of factory configurable ratings and options for agricultural, material handling, construction, mining, aircraft ground support, and other industrial applications.

Package Size

Exceptional power density enables standardization across numerous applications. Multiple installation options minimize total package size. Ideal for equipment with narrow engine compartments.

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
  • Air-to-Air Aftercooled
Control System
  • Electronic governing, PTO speed control
  • Programmable ratings
  • Automatic altitude compensation
  • Power compensation for fuel temperature
  • Programmable low and high idle and total engine limit
  • Electronic diagnostics and fault logging
  • Engine monitoring system SAE J1939 broadcast and control
  • ADEM™ A4 Electronic Control Unit (ECU)
Cooling System
  • Thermostats and housing, vertical outlet
  • Jacket water pump, centrifugal
  • Water pump, inlet
Exhaust System
  • Exhaust manifold, dry
  • Optional exhaust outlet
Flywheels and Flywheel Housing
  • SAE No. 1 flywheel housing
Fuel System
  • MEUI injection
  • Fuel filter, secondary (2 micron)
  • ACERT™ Technology
  • Fuel transfer pump
  • Fuel priming pump
Lube System
  • Crankcase breather
  • Oil cooler
  • Oil filler
  • Lube oil filter
  • Front sump oil pan
  • Oil dipstick
  • Gear driven oil pump
  • Vibration damper
  • Lifting eyes
  • Cold start capability to -20° C (-4° F)
  • Paint: Caterpillar yellow, with optional colors available at request

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