C7.1 Tier 4 (same as China NR4)

Industrial Diesel Engines C7.1 China NR4

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Key Specs

Maximum Power
275 HP
205 kW
Maximum Torque
927 lb-ft @ 1400 rpm
1257 Nm @ 1400 rpm
China Nonroad Stage IV
China Nonroad Stage IV


The Cat?� C7.1 industrial diesel engine is offered in ratings from 130-205 kW (174-275 hp) and meets China Nonroad Stage IV emission standards. The C7.1 is designed to meet the needs of many industries and applications, including bore/drill rigs, chippers/grinders, material handling, mining, earthmoving equipment, paving equipment, pumps, fruit harvesters equipment, turf and underground mining equipment.

Product Specifications for C7.1 China NR4

Maximum Power 275 HP 205 kW
Maximum Torque 927 lb-ft @ 1400 rpm 1257 Nm @ 1400 rpm
Rated Speed 2200 rpm 2200 rpm
Minimum Power 174 HP 130 kW
Emissions China Nonroad Stage IV China Nonroad Stage IV
Engine Configuration In-Line 6 In-Line 6
Bore 4.13 in 105 mm
Stroke 5.3 in 135 mm
Displacement 427.7 in³ 7 l
Compression Ratio 16.5:1 16.5:1
Aspiration Turbocharged-Aftercooled (TA) or Series Turbocharged Aftercooled (TTA) Turbocharged-Aftercooled (TA) or Series Turbocharged Aftercooled (TTA)
Combustion System Direct Injection Direct Injection
Rotation from Flywheel End Counterclockwise Counterclockwise
Aftertreatment DOC+DPF+SCR DOC+DPF+SCR
Length 34.3 in 870 mm
Width 31.4 in 798 mm
Height 35.9 in 911 mm
Weight - Net Dry - Basic Operating Engine Without Optional Attachments 1863 lb 845 kg
Length 29 in 733 mm
Width 30.3 in 769 mm
Height 18.1 in 455 mm
Weight 236 lb 107 kg
Diameter 13.3 in 338 mm

C7.1 China NR4 Standard Equipment

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
  • Innovative filter design to ensure maximum protection of the engine

Lube System

  • Wide choice of sumps for different applications


  • Paint: Caterpillar yellow, with optional colors available on request

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

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C7.1 Tier 4 (same as China NR4)

C7.1 Tier 4 (same as China NR4)

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