C15 ACERT™ 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

Select Units


The Cat® C15 ACERT™ Industrial Power Unit is offered in ratings ranging from 328-403 bkW (440-540 bhp) @ 1800-2100 rpm. These ratings meet China Stage II, U.S. EPA Tier 3 equivalent and EU Stage IIIA equivalent emission standards. Conveniently pre-configured for a wide range of applications, the Cat® Industrial Power Unit is a complete power package containing a radiator, flywheel, alternator and alternator wiring completely pre-assembled for fast, straightforward installation in a number of OEM, customer and packager applications. These fuel efficient units are ready made for irrigation, industrial, mining and other pump applications.

Power Rating

  • Minimum Rating 440.0 BHP 328.0 bkW
  • Maximum Rating 540.0 BHP 403.0 bkW
  • Rated Speed 1800-2100 rpm 1800-2100 rpm

Emission Standards

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


  • Engine Configuration Inline 6, 4-Stroke-Cycle Diesel Inline 6, 4-Stroke-Cycle Diesel
  • Bore 137.2 mm (5.4 in) 137.2 mm (5.4 in)
  • Stroke 171.4 mm (6.75 in) 171.4 mm (6.75 in)
  • Displacement 15.2 L (927.56 in³) 15.2 L (927.56 in³)
  • Aspiration Turbocharged Aftercooled (TA) Turbocharged Aftercooled (TA)
  • Compression Ratio 18:1 18:1
  • Rotation from Flywheel End Counterclockwise Counterclockwise

Power Unit Dimensions - Approximate

  • Height 2629.5 mm (103.5 in) 2629.5 mm (103.5 in)
  • Length 2447.7 mm (96.4 in) 2447.7 mm (96.4 in)
  • Weight - Net Dry - Standard Configuration Without Oil, Cooling, Clutch, Compressor, A/C 2055 kg (4531.5 lb) 2055 kg (4531.5 lb)
  • Width 1316.6 mm (51.8 in) 1316.6 mm (51.8 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

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