Cat® C15 ACERT™ Diesel Engine

C15 ACERT™ Tier 4 Diesel Engine

Cat® C15 ACERT™ Diesel Engine

On construction sites and mining operations, in agriculture and forestry, and in a wide range of industries, Cat® C15 ACERT™ Industrial Diesel Engines deliver the power, performance and durability to take on the biggest challenges. More importantly, they’re backed by the world-class Cat dealer network ready to service and support every Cat® industrial engine. Industries and applications powered by C15 ACERT engines include: Agriculture, Ag Tractors, Aircraft Ground Support, Bore/Drill Rigs, Chippers/Grinders, Combines/Harvesters, Compactors/Rollers, Compressors, Construction, Cranes, Crushers, Dredgers, Forestry, General Industrial, Hydraulic Power Units, Irrigation Equipment, Loaders/Forwarders, Material Handling, Mining, Mobile Earthmoving Equipment, Paving Equipment, Pumps, Shovels/Draglines, Surface Hauling Equipment and Trenchers.

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Product Specs

PETU Dimensions - Tier 4 Final, Stage IV Only

551 mm (21.7 in)
287 mm (11.3 in)
19.42 kg (42.8 lb)
Volume Capacity
48.4 L (51.1 qt)
854 mm (33.6 in)

Aftertreatment Dimensions - Approximate

779.8-1112 mm (30.7-43.8 in)
258-272 kg (569-600 lb)
1053-1153 mm (41.5-45.4 in)
451.3-654 mm (17.8-25.7)
330.2-355.6 mm (13-14 in)

Engine Dimensions - Approximate

943-969 mm (37.1-38.1 in)
Weight - Net Dry - Basic Operating Engine Without Optional Attachments
1542-1666 kg (3395.5-3673 lb)
1239-1248 mm (48.8-49.1 in)
1438 mm (56.6 in)


Lube System - Refill
38-72 L (40-76 qt)
Cooling System - Capacity
26.9 L (28.4 qt)
15.2 L (927.6 in³)
171 mm (6.73 in)
137 mm (5.4 in)
Engine Configuration
In-Line 6, 4-Stroke-Cycle Diesel
Turbocharged-Aftercooled (TA)
Compression Ratio
Combustion System
Direct Injection
Rotation from Flywheel End

Power Rating

Minimum Power
Maximum Power
Rated Speed
1800-2100 rpm

Emission Standards

U.S. EPA Tier 4 Final Nonroad, EU Stage IV Nonroad Emission Standards. Designed to meet proposed EU Stage V Nonroad Emission Standards. U.S. EPA Tier 4 Interim Nonroad Equivalent (Not Currently EPA Certified) and EU Stage IIIB Nonroad Equivalent (Non-C


  • Air Inlet System
    • Turbocharged
    • Air-to-Air Aftercooled
    • Mid-mount turbocharged system with front and rear exhaust configurations (Tier 4 Final, Stage IV)
  • 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
    • Integrated Electronic Control Unit (ECU)
    • Remote fan control
  • Cooling System
    • Thermostats and housing, vertical outlet
    • Centrifugal water pump
    • Guidance on cooling system design available through your dealer to ensure equipment reliability
  • Flywheels And Flywheel Housing
    • Choice of SAE No. 0 or SAE No. 1 flywheel housing
    • Available SAE No. 1 power take off with optional SAE A, SAE B or SAE C power take off drives. Engine power can also be taken from the front of the engine with optional attachments. (Tier 4 Final, Stage IV).
  • Fuel System
    • MEUI injection
    • Primary fuel filter
    • Secondary fuel filters
    • Fuel transfer pump
    • Electronic fuel priming
  • Lube System
    • Open crankcase ventilation system
    • Oil cooler
    • Oil filler
    • Lube oil filter
    • Oil dipstick
    • Gear driven oil pump
    • Choice of front, rear or center sumps
    • Open crankcase ventilation system with fumes disposal (optional OCV filter system) (Tier 4 Final, Stage IV)
  • Power Take Off (pto)
    • SAE A, SAE B or SAE C power take off (PTO) drives. Engine power can also be taken from the front of the engine on some applications.
  • General
    • Paint: Caterpillar yellow, with optional colors available at request
  • U.s. Epa Tier 4 Interim, Eu Stage Iiib Aftertreatment / Clean Emissions Control Equipment
    • Cat Regeneration System
    • Clean Emissions Module (CEM), consisting of Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC)
    • NOx Reduction System (NRS)
    • Flex pipe connection kit with 90° rotatable elbows to attach to Cat Regeneration System Inlet
    • Available in 12 volt or 24 volt systems
  • U.s. Epa Tier 4 Final, Eu Stage Iv Aftertreatment
    • Cat Regeneration System
    • Clean Emissions Module (CEM), consisting of Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC)
    • Aftertreatment Electronic Control Unit (ECU)
    • NOx Reduction System (NRS)
    • Pump Electronic Control Unit (PETU)
    • Selective Catalytic Reduction (SCR)
    • Available in 12V or 24V systems

Optional Equipment

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