Cat® C7.1 ACERT™ Diesel Engine

C7.1 ACERT Tier 4 Diesel Engines - Highly Regulated

Cat® C7.1 ACERT™ Diesel Engine

Demanding conditions, applications and environments make the Cat® C7.1 ACERT engines the perfect solution for your severe duty equipment. With decades of diesel engine innovation and expertise behind these engines, they deliver the low operating costs and legendary Cat reliability and durability that give you a powerful advantage. 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 C7.1 ACERT engines include: Agriculture, Ag Tractors, Aircraft Ground Support, Bore/Drill Rigs, Chippers/Grinders, Combines/Harvesters, Compactors/Rollers, Compressors, Construction, Cranes, Crushers, Feller Bunchers, Forestry, Forklifts, General Industrial, Hydraulic Power Units, Irrigation Equipment, Loaders/Forwarders, Material Handling, Mining, Mobile Earthmoving Equipment, Mobile Sweepers, Paving Equipment, Pumps, Skidders, Specialty Ag Equipment, Sprayers, Trenchers and Underground Mining Equipment. Cat® C7.1 ACERT™ Industrial Diesel Engines, with ratings: 140-225 bkW (187.7-301.8 bhp) @ 2200 rpm, meet U.S. EPA Tier 4 Interim, EU Stage IIIB emission standards. Ratings: 116-225 bkW (156-302 bhp) @ 2200 rpm are designed to meet U.S. EPA Tier 4 Final, EU Stage IV emission standards. This information about Emissions describes the particular rating’s emissions technology. For more information about emissions certification, please contact your local Cat dealer.

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Product Specs

Aftertreatment Dimensions - Approximate

771-918.7 mm (30.4-36.2 in)
468-643.9 mm (18.4-25.3 in)
287-337.8 mm (11.3-13.3 in)
714.4-793 mm (28.1-31.2 in)
90-134 kg (198-295.4 lb)

Engine Dimensions - Approximate

753-820.2 mm (29.6-32.3 in)
Weight - Net Dry - Basic Operating Engine Without Optional Attachments
715 kg (1576 lb)
1063.7 mm (41.9 in)
907 mm (35.7 in)


Cooling System - Capacity
15.2 L (16 qt)
Lube System - Refill
13-16 L (13.7-16.9 U.S. qts)
7 L (427.7 in³)
105 mm (4.1 in)
135 mm (5.3 in)
Engine Configuration
In-Line 6, 4-Stroke-Cycle Diesel
Turbocharged-Aftercooled (TA) or Series Turbocharged Aftercooled (TTA)
Compression Ratio
Combustion System
Direct Injection
Rotation from Flywheel End

Power Rating

Minimum Power
Maximum Power
Rated Speed
2200 rpm

Emission Standards

U.S. EPA Tier 4 Final Nonroad, EU Stage IV Nonroad, U.S. EPA Tier 4 Interim Nonroad Equivalent (Not Currently EPA Certified) and EU Stage IIIB Nonroad Equivalent (Non-Current for EU) Emission Standards


  • Air Inlet
    • Standard air cleaners
  • Control System
    • Full electronic control system, all connectors and wiring looms waterproof and designed to withstand harsh off-highway environments
    • Flexible and configurable software features and well-supported SAE J1939 CAN bus enables highly integrated machines
  • Cooling System
    • Top tank temperature 108° C (226° F) as standard to minimize cooling pack size
    • 50:50 water glycol mix
    • Guidance on cooling system design available through your dealer to ensure equipment reliability
  • Flywheels And Flywheel Housing
    • Wide choice of drivetrain interfaces, including SAE No. 1, SAE No. 2, and SAE No. 3 configurations
  • Fuel System
    • Electronic high pressure common rail
    • ACERT Technology
    • Innovative filter design to ensure maximum protection of the engine
  • Lube System
    • Wide choice of sumps for different 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
    • Clean Emissions Module (CEM), consisting of Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC)
    • NOx Reduction System (NRS)
    • 3" flex pipe connection kit with straight, 45°, and 90° options for flexibility
  • U.s. Epa Tier 4 Final, Eu Stage Iv Aftertreatment/ Clean Emissions Control Equipment
    • Clean Emissions Module (CEM), consisting of Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC)
    • NOx Reduction System (NRS)
    • Selective Catalytic Reduction (SCR)
    • 3" flex pipe connection with straight, 45°, and 90° options for flexibility

Optional Equipment

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