Cat® C2.2 Industrial Power Unit

Cat® C2.2 Industrial Power Unit

The Cat® C2.2 Industrial Power Unit is offered in the following rating: 36.4 bkW (48.8 bhp) @ 2800-3000 rpm. This rating meets U.S. EPA Tier 4 Final, EU Stage IIIA emission standards. Ratings: 44.7-45.5 bkW (59.9-61.0 bhp) @ 2800-3000 rpm meet U.S. EPA Tier 4 Final, EU Stage IIIB 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.

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Power Rating

Minimum Power
Maximum Power
Rated Speed
2800-3000 rpm

Emission Standards

U.S. EPA Tier 4 Interim, EU Stage IIIA


Engine Configuration
Inline 4, 4-Stroke-Cycle Diesel
84 mm (3.3 in)
100 mm (3.9 in)
2.216 L (135 in³)
Naturally Aspirated (NA) or Turbocharged (T)
Compression Ratio
Rotation (from flywheel end)
Cooling System Capacity
6.98 L (7.4 qt)
Lube System (refill)
10.6 L (11.2 qt)

Power Unit Dimensions (Approximate. Final dimensions dependent on selected options)

946-973 mm (37.2-38.2 in)
513-590 mm (20.2-23.2 in)
854-973 mm (33.6-38.3 in)
Weight - Approximate, Net Dry (Standard configuration without oil, cooling, clutch, compressor, A/C)
218-228 kg (480-502 lb)

Aftertreatment Dimensions (Approximate. Final dimensions dependent on selected options)

198 mm (7.8 in)
16 kg (35.3 lb)

Standard Equipment

  • Air Inlet System
    • Inlet manifold
  • Control System
    • Alternator 12 volt 65 amp
    • Tier 4 Final: Alternator 12V 85 amp
    • Starter motor 12 volt
    • Glow plug starting aid
  • Cooling System
    • Belt-driven coolant pump
    • Coolant temperature switch
    • Mounted air cleaner
    • Mounted radiator and fan
  • Flywheels And Flywheel Housing
    • SAE No. 7 1/2 flywheel
    • SAE No. 4 flywheel housing
  • Fuel System
    • Fuel injection pump
    • Spin-on fuel filter
    • Electronic Shut-off Solenoid (ESOS)
  • Lube System
    • Spin-on lube oil filter
    • Lube oil pressure switch
    • Lube oil sump
  • Power Take Off (pto)
    • Provision for Power Take Off (PTO)
    • SAE A PTO drive (Tier 4 Final, Stage IV)
  • General
    • Cast iron, engine block
    • Cast iron exhaust manifold--side outlet
    • Cold start capability to -20° C (-4° F)
    • Gradeability 35° continuous
    • Paint: Caterpillar yellow, with optional colors available at request
  • U.s. Epa Tier 4 Final, Eu Stage Iiib Aftertreatment/clean Emissions Control Equipment
    • Diesel Particulate Filter (DPF) with range of outlet options
    • Diesel Oxidation Catalyst (DOC)
    • Passive regeneration system with backup