Demanding conditions, applications and environments make the Cat® C7.1 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 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 Industrial Diesel Engines, with ratings: 129-225 bkW (172-301.8 bhp) @ 2200 rpm, meet U.S. EPA Tier 4 Final, EU Stage V 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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Power Rating
- Maximum Power
- 320HP
- Maximum Torque
- 935lb-ft @ 1400 rpm
- Rated Speed
- 2200 rpm
- Minimum Power
- 172HP
Emission Standards
- Emissions
- U.S. EPA & CARB Tier 4 Final, EU Stage V
General
- Engine Configuration
- In-Line 6
- Bore
- 4.1in
- Stroke
- 5.3in
- Displacement
- 427.7in³
- Compression Ratio
- 16.5:1
- Aspiration
- Turbocharged-Aftercooled (TA) or Series Turbocharged Aftercooled (TTA)
- Combustion System
- Direct Injection
- Rotation from Flywheel End
- Counterclockwise
- Aftertreatment
- DOC+DPF+SCR
Engine Dimensions - Approximate
- Length
- 41.9in
- Width
- 31.4in
- Height
- 35.9in
- Weight - Net Dry - Basic Operating Engine Without Optional Attachments
- 1658lb
Aftertreatment Dimensions
- Length
- 29in
- Width
- 30.3in
- Height
- 18.1in
- Weight
- 236lb
Aftertreatment Dimensions*
- Diameter
- 13.3in
Standard Equipment:
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- Air Inlet
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- Standard air cleaners
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- Control System
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- 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
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- Cooling System
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- 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
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- Flywheels And Flywheel Housing
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- Wide choice of drivetrain interfaces, including SAE No. 1, SAE No. 2, and SAE No. 3 configurations
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- Fuel System
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- Electronic high pressure common rail
- Innovative filter design to ensure maximum protection of the engine
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- Lube System
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- Wide choice of sumps for different applications
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- General
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- Paint: Caterpillar yellow, with optional colors available on request
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- U.s. Epa Tier 4 Final, Eu Stage V, Japan 2014 (tier 4 Final) Aftertreatment/ Clean Emissions Control Equipment
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- 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