Cat® C27 Diesel Engine

The Cat® C27 Industrial Diesel Engine is offered in ratings ranging from 597-783 bkW (800-1050 bhp) @ 1800 rpm. These ratings meet U.S. EPA Tier 4 Final emission standards.


It may be big, but the power-dense Cat C27 is a fully-configurable common core engine that makes installation across a wide variety of applications simple. With options like rear-mounted turbos and engine-mounted aftertreatment, it's now easier than ever to install. And becuase the C27 is DEF-free, there's even more room to maneuver under the hood.

Advanced Features

Say goodbye to DEF, thermal management and engine regeneration with the Cat C27. Thanks to advances in Caterpillar's technology, the larger-than-life engine is practically maintenance free.

Ideal Applications

Industrial and construction applications such as: Dredges • Chippers • Grinders • Emergency water pumps • Rock drills

Total Cost of Ownership

Carefully crafted for efficiency, the Cat C27 fuel consumption is optimized to meet the demanding operating cycles of just about any machine. And with no DEF to worry about, owners can save on parts and maintence costs while also remaining maintenance-free for the life of the engine.

Cat Dealer Product Support

Reliable dealer service and support, scheduled maintenance and an included warranty: it’s what Cat C27 owners can expect with their new engine. See your Cat dealer for details.


Featuring a clean emissions module, the Cat C27 uses DOC, DPF and SCR technologies to keep the engine—and the air around it—cleaner, not only making for a more efficient machine, but also a safer job site.

Standard Equipment

Air Inlet System
  • Turbocharged
  • Air-to-Air Aftercooled
Control System
  • Electronic control system
  • Over-foam wiring harness
  • Automatic altitude compensation
  • Power compensated for fuel temperature
  • Configurable software features
  • Engine monitoring system SAE J1939 broadcast and control
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
  • Choice of SAE No. 0 or SAE No. 1 flywheel housing
Fuel System
  • MEUI injection
  • Fuel filter, secondary (2 micron)
  • Fuel transfer pump
  • Electronic fuel priming
Lube System
  • Open crankcase ventilation system
  • Oil cooler
  • Oil filler
  • Lube oil filter
  • Rear sump oil pan
  • Oil dipstick
  • Gear driven oil pump
  • Paint: Caterpillar yellow, with optional colors available at request
  • Vibration damper
  • Lifting eyes

Additional information

Offering Type

Power Rating - Maximum Power

783 kW ( 1050 HP )

Power Rating - Maximum Torque

4674 Nm @ 1200 rpm ( 3448 lb-ft @ 1200 rpm )

Power Rating - Rated Speed

1800 rpm

Power Rating - Minimum Power

597 kW ( 800 HP )

Emission Standards - Emissions

U.S. EPA Tier 4 Final

General - Engine Configuration


General - Bore

137.2 mm ( 5.4 in )

General - Stroke

152.4 mm ( 6 in )

General - Displacement

27 l ( 1649.5 in³ )

General - Compression Ratio


General - Aspiration

Twin Turbocharged-Aftercooled (TTA)

General - Combustion System

Direct Injection

General - Rotation from Flywheel End


General - Aftertreatment


Engine Dimensions - Approximate - Length

1874 mm ( 73.8 in )

Engine Dimensions - Approximate - Width

1600 mm ( 63 in )

Engine Dimensions - Approximate - Height

1370 mm ( 53.9 in )

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

3004 kg ( 6625 lb )

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