Cat® C27 ACERT™ Industrial Diesel Engine

Cat® C27 ACERT™ 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.

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Power Rating

Minimum Power
Maximum Power
Rated Speed
1800-2100 rpm

Emission Standards

U.S. EPA Tier 2 Equivalent


Engine Configuration
V-12, 4-Stroke-Cycle Diesel
137.2 mm (5.4 in)
152.4 mm (6.0 in)
27.03 L (1649.5 in³)
Turbocharged Aftercooled (TA)
Compression Ratio
Combustion System
Direct Injection
Rotation (from flywheel end)

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

1917 mm (75.5 in)
1464 mm (57.6 in)
1319 mm (51.9 in)
Weight, Net Dry (Basic Operating Engine Without Optional Attachments)
2946 kg (6495 lb)

Standard Equipment

  • Air Inlet System
    • 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
  • 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
  • General
    • Vibration damper
    • Lifting eyes
    • Cold start capability to -20° C (-4° F)
    • Paint: Caterpillar yellow, with optional colors available at request