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Cat® industrial engines are ready for your application. These engines deliver the unsurpassed reliability, durability, fuel efficiency, and low cost of ownership you have come to expect from Caterpillar. And our world-class product support will never let you down. All this adds up to a powerful advantage for you. Every Cat industrial diesel and gas engine comes with 75 years of engine experience. Our world-class product line of high-speed and medium-speed industrial engines in a wide range of applications offer power solutions for the most demanding installations and the harshest environments. With power options from 8.2 to 6,100 bkW (11 to 8,180 bhp), Cat industrial diesel and gas engines offer the widest power range in the industry.

Cat® C27 Industrial Diesel Engine

The Cat® C27 ACERT™ Industrial Diesel Engine is offered in ratings ranging from 597-858 bkW (800-1150 bhp) @ 1800-2100 rpm. These ratings meet U.S. EPA Tier 2 equivalent emission standards. Industries and applications powered by these high powered engines include Bore/Drill Rigs, Chippers/Grinders, Construction, Cranes, Dredgers, Forestry, Hydraulic Power Units, Irrigation Equipment, Material Handling, Mobile Earthmoving Equipment, Paving Equipment, Pumps, Shovels/Draglines, Surface Hauling Equipment and Trenchers.

  • Specification Summary

  • Maximum Power 858 kW
  • Maximum Torque 5255 Nm @ 1400 rpm
  • Rated Speed 1800-2100 rpm
  • Minimum Power 597 kW

Product Details

Power Rating

Maximum Power 858 kW
Maximum Torque 5255 Nm @ 1400 rpm
Rated Speed 1800-2100 rpm
Minimum Power 597 kW

Emission Standards

Emissions U.S. EPA Tier 2 Equivalent


Engine Configuration V-12, 4-Stroke-Cycle Diesel
Bore 137 mm
Stroke 152 mm
Displacement 27.03 l
Compression Ratio 16.5:1
Aspiration Turbocharged Aftercooled (TA)
Combustion System Direct Injection
Rotation from Flywheel End Counterclockwise
Aftertreatment -

Engine Dimensions - Approximate

Length 1917 mm
Width 1464 mm
Height 1319 mm
Weight - Net Dry - Basic Operating Engine Without Optional Attachments 2946 kg
  • Air Inlet System
    •  Twin Turbocharged Aftercooled
    •  Air-to-Air Aftercooled
  • Twin Turbocharged Aftercooled
    • 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
      • Thermostats and housing, vertical outlet
        • Jacket water pump, centrifugal
          • Water pump, inlet
            • Exhaust System
              •  Exhaust manifold, dry
              •  Optional exhaust outlet
            • Exhaust manifold, dry
              • Optional exhaust outlet
                • Flywheels and Flywheel Housing
                  •  SAE No. 1 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
                  • Crankcase breather
                    • Oil cooler
                      • Oil filler
                        • Lube oil filter
                          • Front sump oil pan
                            • Oil dipstick
                              • Gear driven oil pump
                                • General
                                  •  Vibration damper
                                  •  Lifting eyes
                                  •  Cold start capability to -20° C (-4° F)
                                  •  Paint: Caterpillar yellow, with optional colors available at request
                                • 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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