Cat® C4.4 Industrial Power Unit

  • Overview
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Reliable, Quiet and Durable Power

World-class manufacturing capability and processes coupled with proven core engine designs assure reliability, quiet operation, and many hours of productive life.

Fuel Efficiency

Fuel consumption optimized to match operating cycles of a wide range of equipment and applications while maintaining low operating costs.

World-class Product Support Offered Through Global Cat Dealer Network

  • Scheduled maintenance, including SOSSM 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
Power Rating
Maximum Power 81 kW (108.6 HP)
Rated Speed 2200 rpm
Minimum Power 61 kW (81.8 HP)
Emission Standards
Emissions UN ECE R96 Stage IIIA
Engine Configuration Inline 4, 4-Stroke-Cycle Diesel
Bore 105 mm (4.1 in)
Stroke 127 mm (5 in)
Displacement 4.4 l (268.5 inu00b3)
Compression Ratio 18.2:1
Aspiration Turbocharged (T)
Rotation from Flywheel End Counterclockwise
Aftertreatment -
Power Unit Dimensions
Length 1260 mm (49.6 in)
Width 734 mm (28.9 in)
Height 964 mm (38 in)
Weight 465 kg (1025 lb)

Standard Equipment

  • Air Inlet System
    • Mounted air filter and turbocharger
  • Control System
    • Available in 12 volt or 24 volt systems
    • Starter motor 12V or 24V
  • Cooling System
    • Fan (pusher or puller)
    • Fan drive
    • Radiator
    • Water pump
  • Flywheels and Flywheel Housing
    • Flywheel
    • SAE No. 3 flywheel housing
  • Fuel System
    • Fuel filter
  • Lube System
    • Oil cooler
    • Lube oil filter
    • Timing case oil filler
  • Mountings
    • Engine mounting brackets
  • Power Take Off (PTO)
    • SAE A or SAE B front PTO (142/280 NM)
  • General
    • Paint: Caterpillar yellow, with optional colors available at request

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