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Cat® C9 Industrial Diesel Engine

The Cat® C9 Industrial Diesel Engine is offered in ratings ranging from 205-280 bkW (275-375 bhp) @ 1800-2200 rpm. These ratings meet China Stage II, EPA Tier 3 equivalent, and EU Stage IIIA equivalent emission standards. Industries and applications powered by C9 engines include Agriculture, Ag Tractors, Aircraft Ground Support, Bore/Drill Rigs, Chippers/Grinders, Combines/Harvesters, Compactors/Rollers, Compressors, Construction, Cranes, Crushers, Dredgers, Forestry, Forklifts, General Industrial, Hydraulic Power Units, Irrigation Equipment, Loaders/Forwarders, Material Handling, Mining, Mobile Earthmoving Equipment, Mobile Sweepers, Paving Equipment, Pumps, Shovels/Draglines, Specialty Ag Equipment, Sprayers, Surface Hauling Equipment, Trenchers and Underground Mining Equipment.

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Maximum Power 375 HP
Maximum Torque 1230 lb-ft @ 1400 rpm
Rated Speed 1800-2200 rpm
Minimum Power 275 HP
Emissions China Nonroad III, U.S. EPA Tier 3 Equivalent, EU Stage IIIA Equivalent
Engine Configuration Inline 6, 4-Stroke-Cycle Diesel
Bore 4.4 in
Stroke 5.9 in
Displacement 537 in³
Compression Ratio 16.1:1
Aspiration Turbocharged Aftercooled (TA)
Combustion System Direct Injection
Rotation from Flywheel End Counterclockwise
Aftertreatment -
Length 43 in
Width 32.6 in
Height 40.3 in
Weight - Net Dry - Basic Operating Engine Without Optional Attachments 1905 lb
Air Inlet System
  • Turbocharged
  • Air-to-Air Aftercooled
Control System
  • Electronic governing, PTO speed control
  • Programmable ratings
  • Automatic altitude compensation
  • Power compensation for fuel temperature
  • Programmable low and high idle and total engine limit
  • Electronic diagnostics and fault logging
  • Engine monitoring system SAE J1939 broadcast and control
  • ADEM™ A4 Electronic Control Unit (ECU)
Cooling System
  • Thermostats and housing, vertical outlet
  • Jacket water pump, centrifugal
  • Water pump, inlet
Exhaust System
  • Exhaust manifold, dry
  • Optional exhaust outlet
Flywheels and Flywheel Housing
  • SAE No. 1 flywheel housing
Fuel System
  • HEUI™ injection
  • Fuel filter, secondary (2 micron)
  • ACERT™ Technology
  • Fuel transfer pump
  • Fuel priming pump
Lube System
  • Crankcase breather
  • Oil cooler
  • Oil filler
  • Lube oil filter
  • Front sump oil pan
  • Oil dipstick
  • Gear driven oil pump
General
  • Vibration damper
  • Lifting eyes
  • Cold start capability to -20° C (-4° F)
  • Paint: Caterpillar yellow, with optional colors available at request