The Cat® C7.1 Industrial Diesel Engine is offered in ratings ranging from 116-205 bkW (156.2 bhp-275 bhp) @2200 rpm. These ratings meet China Stage II, U.S. EPA Tier 3 equivalent, EU Stage IIIA equivalent emission standards. 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.
Maximum Power 275 HP
Maximum Torque 774 lb-ft @ 1400 rpm
Emissions China Nonroad Stage III, Brazil MAR-1, UN ECE R96 Stage IIIA
Rated Speed 2200-2500 rpm
Maximum Power 275HP
Maximum Torque 774lb-ft @ 1400 rpm
Minimum Power 155.6HP
Rated Speed 2200-2500 rpm
Emissions China Nonroad Stage III, Brazil MAR-1, UN ECE R96 Stage IIIA
Height 32.2in
Length 36.6in
Weight - Net Dry - Basic Operating Engine Without Optional Attachments 1115lb
Width 26.3in
Aftertreatment -
Aspiration Turbocharged Aftercooled (TA)
Bore 4.1in
Displacement 427.7in³
Engine Configuration In-Line 6, 4-Stroke-Cycle Diesel
Rotation from Flywheel End Counterclockwise
Stroke 5.3in
Standard air cleaners
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
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
Diesel particulate filter and regeneration system supplied, with a range of inlet and outlet options
Wide choice of drivetrain interfaces, including SAE1, SAE2 or SAE3 configurations
Electronic high pressure common rail, ACERTTM Technology, innovative filter design to ensure maximum protection of the engine.
Wide choice of sumps for different applications
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.
Paint: Caterpillar yellow, with optional colors available at request
