C9

Maximum Power
375 HP / 280 kW
Maximum Torque
1230 lb-ft @ 1400 rpm / 1668 Nm @ 1400 rpm
Minimum Power
275 HP / 205 kW

Demanding conditions, applications and environments make Cat® C9 Industrial Diesel 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 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. C9 engines, with ratings: 205-280 bkW (275-375 bhp) @ 1800-2200 rpm, meet China Stage III, EPA Tier 3 equivalent, EU Stage IIIA equivalent emission standards. U.S. EPA Tier 3 equivalent and EU Stage IIIA equivalent ratings are available using U.S. EPA and EU Flexibility. They are also available in other regulated and non-regulated areas.

Power Rating
Maximum Power 375 HP / 280 kW
Maximum Torque 1230 lb-ft @ 1400 rpm / 1668 Nm @ 1400 rpm
Rated Speed 1800-2200 rpm
Minimum Power 275 HP / 205 kW
Emission Standards
Emissions China Nonroad Stage III, Brazil MAR-1, UN ECE R96 Stage IIIA, U.S. EPA Tier 3
General
Engine Configuration Inline 6, 4-Stroke-Cycle Diesel
Bore 4.4 in / 112 mm
Stroke 5.9 in / 149 mm
Displacement 537 in³ / 8.8 l
Compression Ratio 16.1:1
Aspiration Turbocharged Aftercooled (TA)
Combustion System Direct Injection
Rotation from Flywheel End Counterclockwise
Aftertreatment -
Engine Dimensions - Approximate
Length 43 in / 1091 mm
Width 32.6 in / 827 mm
Height 40.3 in / 1023 mm
Weight - Net Dry - Basic Operating Engine Without Optional Attachments 1905 lb / 864 kg

Standard Equipment

  • 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
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