C2.2 LRC Diesel Engines - Lesser Regulated & Non-Regulated

Industrial Diesel Engines C2.2

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Key Specs

Maximum Power
66 HP
49.2 kW
Maximum Torque
153 lb-ft @ 1800 rpm
208 Nm @ 1800 rpm
U.S. EPA Tier 4 Interim Equivalent
U.S. EPA Tier 4 Interim Equivalent


Cat® C2.2 Industrial Diesel Engines deliver impressive performance throughout a wide speed range with exceptional power density. Their ultra-compact package size and extensive choice of options ensures these engines are ideal for a wide range of small, off road applications. Single-side servicing improves ease of maintenance and lowers overall owner operating costs. Industries and applications powered by C2.2 engines include: Agriculture, Aerial Lifts, Bore/Drill Rigs, Chippers/Grinders, Compactors/Rollers, Compressors, Construction, General Industrial, Irrigation Equipment, Material Handling, Mining, Mobile Earthmoving Equipment, Mobile Light Towers, Mobile Sweepers, Paving Equipment, Pumps, Trenchers, Turf and Landscaping, Underground Mining Equipment and Welders. C2.2 engines, with ratings: 31-49.3 bkW (41.6-66.1 bhp) @ 2200-3000 rpm, meet EPA Tier 4 Interim equivalent, EU Stage IIIA equivalent emission standards. They are available using U.S. EPA and EU Flexibility, and for other regulated and non-regulated areas.

Product Specifications for C2.2

Maximum Power 66 HP 49.2 kW
Maximum Torque 153 lb-ft @ 1800 rpm 208 Nm @ 1800 rpm
Rated Speed 2200-3000 rpm 2200-3000 rpm
Minimum Power 41.6 HP 31 kW
Emissions U.S. EPA Tier 4 Interim Equivalent U.S. EPA Tier 4 Interim Equivalent
Engine Configuration Inline 4, 4-Stroke-Cycle Diesel Inline 4, 4-Stroke-Cycle Diesel
Bore 3.3 in 84 mm
Stroke 3.9 in 100 mm
Displacement 135 in³ 2.216 l
Compression Ratio 23.3:1 23.3:1
Aspiration Naturally Aspirated (NA), Turbocharged (T) or Turbocharged Aftercooled (TA) Naturally Aspirated (NA), Turbocharged (T) or Turbocharged Aftercooled (TA)
Combustion System Indirect Injection Indirect Injection
Rotation from Flywheel End Counterclockwise Counterclockwise
Aftertreatment - -
Length 26 in 662 mm
Width 19.3 in 489 mm
Height 27.5 in 698 mm
Weight - Net Dry - Basic Operating Engine Without Optional Attachments 427.7 lb 194 kg

C2.2 Standard Equipment

Air Inlet System

  • Inlet manifold with choice of inlets.

Control System

  • Alternator 12 volt 65 amp
  • Starter motor 12 volt
  • Glow plug starting aid

Cooling System

  • Belt-driven coolant pump
  • Coolant temperature switch
  • Choice of cooling fans

Flywheels and Flywheel Housing

  • SAE No. 7 1/2, SAE No. 8 or SAE No. 10 flywheel
  • Choice of SAE No. 4 or standard backplate flywheel housing

Fuel System

  • Fuel injection pump
  • Spin-on fuel filter
  • Electronic Shut-off Solenoid (ESOS)

Lube System

  • Alternative oil fillers
  • Spin-on lube oil filter
  • Lube oil pressure switch
  • Lube oil sump


  • 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

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