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The C3.4 Industrial Diesel Engine is offered in a rating of 62 bkW (83 bhp) @ 2500 rpm. This rating meets EPA Tier 3 equivalent, EU Stage IIIA equivalent emission standards. Industries and applications powered by C3.4 engines include: Agriculture, Aerial Lifts, Aircraft Ground Support, Bore/Drill Rigs, Chippers/Grinders, Compactors/Rollers, Compressors, Construction, Forestry, General Industrial, Irrigation Equipment, Material Handling, Mining, Mobile Earthmoving Equipment, Mobile Light Towers, Mobile Sweepers, Paving Equipment, Pumps, Specialty Ag Equipment, Trenchers, Turf and Landscaping and Underground Mining Equipment.

Power Rating

Minimum Power 83.0 bhp 62.0 bkW Less
Maximum Power 83.0 bhp 62.0 bkW Less
Frequency 2500 rpm 2500 rpm Less

Emission Standards

Emissions U.S. EPA Tier 3 Equivalent, EU Stage IIIA Equivalent U.S. EPA Tier 3 Equivalent, EU Stage IIIA Equivalent Less


Engine Configuration Inline 4, 4-Stroke-Cycle Diesel Inline 4, 4-Stroke-Cycle Diesel Less
Bore 94 mm (3.7 in) 94 mm (3.7 in) Less
Stroke 120 mm (4.72 in) 120 mm (4.72 in) Less
Displacement 3.3 L (201 in3) 3.3 L (201 in3) Less
Aspiration Turbocharged (T) Turbocharged (T) Less
Compression Ratio 19.5:1 19.5:1 Less
Combustion System Direct Injection Direct Injection Less
Rotation (from flywheel end) Counterclockwise Counterclockwise Less

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

Length 784 mm (30.9 in) 784 mm (30.9 in) Less
Width 590-649 mm (23.2-25.5 in), depending on Turbo mount position 590-649 mm (23.2-25.5 in), depending on Turbo mount position Less
Height 722 mm (28.4 in) 722 mm (28.4 in) Less
Weight, Net Dry (Basic Operating Engine Without Optional Attachments) 265 kg (584 lb) 265 kg (584 lb) Less


Meets U.S. EPA Tier 3 equivalent, EU Stage IIIA equivalent emission standards. Available using U.S. EPA Flexibility or EU Flexibility, and for other regulated and non-regulated areas.

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.

High Performance

With maximum torque levels maintained, this engine provides class-leading power take-off capability.

Broad Application Range

Industry leading range of factory configurable ratings and options for agricultural, material handling, construction, mining, aircraft ground support, and other industrial applications.


Every Cat engine is manufactured to stringent quality standards in order to assure customer satisfaction.

World-class Product Support Offered Through Global Cat Dealer Network

  • 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

C3.4 Standard Equipment

Air Inlet System
  • Inlet manifold with choice of inlets.

Control System
  • Alternator 12 volt
  • Starter motor 12 volt
  • Glow plug starting aid

Cooling System
  • Belt-driven coolant pump
  • Choice of cooling fans

Flywheels and Flywheel Housing
  • SAE No. 8 or SAE No. 10 flywheel
  • SAE No. 4 flywheel housing

Fuel System
  • Electronic Shut-off Solenoid (ESOS)

Lube System
  • Lube oil pressure switch
  • Two oil fill positions, front and top cover

  • Cast iron, engine block
  • Cast iron exhaust manifold--side outlet
  • Cold start capability to -20° C (-4° F)
  • Closed circuit breather
  • Paint: Cat yellow, with optional colors available at request

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