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Cat® C7.1 Diesel Engine

The Cat® C7.1 Industrial Diesel Engine is offered in ratings ranging from 112-162 bkW (150-220 bhp) @ 1950-2200 rpm. These ratings meet China Stage II, U.S. EPA Tier 2 equivalent, and EU Stage II equivalent emission standards. 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.

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Maximum Power 217 HP
Maximum Torque 663 lb-ft @ 1400 rpm
Rated Speed 1950-2200 rpm
Minimum Power 150 HP
Emissions China Nonroad Stage III, UN ECE R96 Stage IIIA
Engine Configuration Inline 6, 4-Stroke-Cycle
Bore 4.1 in
Stroke 5.3 in
Displacement 427.7 in³
Compression Ratio 18.2:1
Aspiration Turbocharged Aftercooled (TA)
Combustion System Direct Injection
Rotation from Flywheel End Counterclockwise
Aftertreatment -
Length 44.9 in
Width 28.4 in
Height 32.3 in
Weight - Net Dry - Basic Operating Engine Without Optional Attachments 1118 lb
Air Inlet
  • Standard air cleaners
Cooling System
  • Top tank temperature 108°C (226°F) as standard to minimize cooling pack size, 50:50 water glycol mix, detailed guidance on cooling system design and validation available to ensure machine reliability
Exhaust System
  • Diesel particulate filter and regeneration system supplied, with a range of inlet and outlet options
Flywheels and Flywheel Housing
  • Wide choice of drivetrain interfaces, including SAE1, SAE2 or SAE3 configurations
Lube System
  • Wide choice of sumps for different applications
Power Take Off
  • SAE A or SAE B flanges on left-hand side. Right- hand side twin PTO also available. Engine power can also be taken from the front of the engine on some applications, factory fitted compressors are also available.
General
  • Paint: Caterpillar yellow, with optional colors available at request