New | Cat® C4.4 Diesel Engine

The Cat® C4.4 Naturally Aspirated (NA) Industrial Diesel Engine is offered in ratings ranging from 54-56 bkW (72.4-75 bhp) @ 2200 rpm. These ratings meet EU Stage IIIA equivalent emission standards. Turbocharged (T) and Turbocharged Aftercooled (TA) Ratings are also available, ranging from 55.5-83 bkW (74.4-111.3 bhp) @ 2200-2400 rpm. These ratings meet U.S. EPA Tier 3 equivalent, EU Stage IIIA equivalent emission standards. Industries and applications powered by C4.4 engines include: Agriculture, Aerial Lifts, Aircraft Ground Support, Bore/Drill Rigs, Chippers/Grinders, Compactors/Rollers, Compressors, Construction, Cranes, Crushers, Feller Bunchers, Forestry, Forklifts, General Industrial, Harvesters, Hydraulic Power Units, Irrigation Equipment, Loaders/Forwarders, Material Handling, Mining, Mobile Earthmoving Equipment, Mobile Sweepers, Paving Equipment, Pumps, Skidders, Specialty Ag Equipment, Sprayers, Trenchers, Turf and Landscaping and Underground Mining Equipment.

Power Rating
Minimum Power72.4 bhp
Maximum Power111.3 bhp
Rated Speed2200-2400 rpm
Emission Standards
EmissionsEU Stage IIIA Equivalent (NA). U.S. EPA Tier 3 Equivalent, EU Stage IIIA Equivalent (T, TA)
General
Engine ConfigurationInline 4, 4-Stroke-Cycle Diesel
Bore105 mm (4.13 in)
Stroke127 mm (5.0 in)
Displacement4.4 L (269 in³)
AspirationNaturally Aspirated (NA), Turbocharged (T) or Turbocharged Aftercooled (TA)
Compression Ratio16.2:1
Combustion SystemDirect Injection
Rotation (from flywheel end)Counterclockwise
Lube System (refill)11 L (11.6 qt)
Engine Dimensions (Approximate. Final dimensions dependent on selected options)
Length663 mm (26.1 in)
Width470-620 mm (18.5-24.4 in)
Height775-810 mm (30.5-31.9 in)
Weight, Net Dry (Basic Operating Engine Without Optional Attachments)291-306 kg (640-674.6 lb)

Naturally Aspirated Rating Meets Eu Stage Iiia Equivalent Emission Standards. Turbocharged Rating Meets Epa Tier 3 Equivalent, Eu Stage Iiia Equivalent Emission Standards.

World-class Manufacturing Capability And Processes Coupled With Proven Core Engine Designs Assure Reliability, Quiet Operation, And Many Hours Of Productive Life.

Ideal For Equipment With Narrow Engine Compartments. Multiple Installation Options Minimize Total Package Size.

Every Cat Engine Is Manufactured To Stringent Quality Standards In Order To Assure Customer Satisfaction.

  • scheduled Maintenance, Including S•o•ssm Sample
  • customer Support Agreements (csa)
  • caterpillar Extended Service Coverage (esc)
  • superior Dealer Service Network
  • extended Dealer Service Network Through The Cat Industrial Service Distributor (isd) Program

Air Inlet System
  • Inlet manifold with choice of inlets.
Control System
  • Alternator
  • Starter motor
  • Control Panel
  • Glow plug starting aid
Cooling System
  • Top tank temperature 108° C (226° F) as standard to minimize cooling pack size
  • 50:50 water glycol mix
Flywheels and Flywheel Housing
  • SAE No. 3 flywheel housing
  • Flywheel and starter rings
Fuel System
  • Fuel filter positions
Lube System
  • Lubricating oil filters and breathers
  • Oil filter positions
  • Lube oil sump
Power Take Off
  • SAE B Power Take Off (PTO)
General
  • Timing case and gear-driven auxiliaries
  • Belt-driven auxiliaries
  • Engine mountings
  • Gauges
  • Displays
  • Power and torque curve tailoring
  • Paint: Caterpillar yellow, with optional colors available at request

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