Cat® C4.4 Industrial Power Unit

Cat® C4.4 Industrial Power Unit

The Cat® C4.4 Industrial Power Unit is offered in ratings ranging from 61-81 bkW (81.8-108.6 bhp) @ 2200 rpm. These ratings meet U.S. EPA Tier 3 equivalent, EU Stage IIIA equivalent emission standards. Conveniently pre-configured for a wide range of applications, the Cat® Industrial Power Unit is a complete power package containing a radiator, flywheel, alternator and alternator wiring completely pre-assembled for fast, straightforward installation in a number of OEM, customer and packager applications. These fuel efficient units are ready made for irrigation, industrial, mining and other pump applications.

  • Maximum Power 108.6 HP

  • Emissions UN ECE R96 Stage IIIA

  • Rated Speed 2200 rpm

  • Minimum Power 81.8 HP

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Product Specifications


Power Rating

  • Maximum Power 108.6HP

  • Minimum Power 81.8HP

  • Rated Speed 2200 rpm

Emission Standards

  • Emissions UN ECE R96 Stage IIIA


  • Aftertreatment -

  • Aspiration Turbocharged (T)

  • Bore 4.1in

  • Compression Ratio 18.2:1

  • Displacement 268.5in³

  • Engine Configuration Inline 4, 4-Stroke-Cycle Diesel

  • Rotation from Flywheel End Counterclockwise

  • Stroke 5in

Power Unit Dimensions

  • Height 38in

  • Length 49.6in

  • Weight 1025lb

  • Width 28.9in



Standard Equipment

  • Mounted air filter and turbocharger

  • Available in 12 volt or 24 volt systems

  • Starter motor 12V or 24V

  • Fan (pusher or puller)

  • Fan drive

  • Radiator

  • Water pump

  • Flywheel

  • SAE No. 3 flywheel housing

  • Fuel filter

  • Oil cooler

  • Lube oil filter

  • Timing case oil filler

  • Engine mounting brackets

  • SAE A or SAE B front PTO (142/280 NM)

  • Paint: Caterpillar yellow, with optional colors available at request

Optional Equipment