New | Cat® C3.4B Diesel Engine

Cat® C3.4B Industrial Diesel Engines offer the perfect balance of durability, fuel efficiency and low emissions. The C3.4B Industrial Engine is offered in ratings ranging from 45-55.4 bkW (60-74.3 bhp) @ 2200-2500 rpm, which meet U.S. EPA Tier 4 Final, EU Stage IIIB emission standards. Industries and applications powered by C3.4B 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 Power60.3 BHP
Maximum Power74.3 BHP
Rated Speed2200 & 2500 rpm
Emission Standards
EmissionsU.S. EPA Tier 4 Final, EU Stage IIIB Nonroad Emission Standards
Engine ConfigurationIn-Line 4, 4-Stroke-Cycle Diesel
Bore99 mm (3.9 in)
Stroke110 mm (4.3 in)
Displacement3.4 L (207.5 in³)
AspirationTurbocharged (T)
Compression Ratio17:1
Combustion SystemDirect Injection
Rotation from Flywheel EndCounterclockwise
Cooling System - Capacity6 L (6.3 qt)
Engine Dimensions - Approximate
Height829.5 mm (32.6 in)
Length610 mm (24 in)
Weight - Net Dry - Basic Operating Engine Without Optional Attachments251 kg (553.4 lb)
Width653 mm (25.7 in)
Aftertreatment Dimensions - Approximate
DiameterWall-Flow: 180 mm (7.1 in). Through Flow: 149 mm (5.8 in)
LengthWall Flow: 541 mm (21.3 in). Through Flow: 509 mm (20 in)
WeightWall Flow: 20 kg (44 lb). Through Flow: 14 kg (30.8 lb)

U.s. Epa Tier 4 Final, Eu Stage Iiib Emission Standards.

Worldwide Service Delivers Ease Of Maintenance And Simplifies The Servicing Routine. Capable Of Optimal Oil Change Intervals Of 500 Hours. Service-free Through-flow Diesel Particulate Filter (dpf) For Tier 4 Final, Stage Iiib. The S·o·s℠ Program Is Available From Your Cat Dealer To Determine Oil Change Intervals And Provide Optimal Performance.

Every Cat Engine Is Manufactured To Stringent Quality Standards In Order To Assure Customer Satisfaction.

  • scheduled Maintenance, Including Sos℠ 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

technology And Power. The Diesel Particulate Filter (dpf) Technology Chosen Performs Through The Work Cycle Of The Engine, Allowing It To Work Efficiently. Engine Performance Has Been Optimized To Provide Maximum Power, And The Emissions Module Is Invisible To The Operator In Most Duty Cycles.

mounting. Multiple Off And On Engine Installation Options Provide Customers With Simple And Flexible Solutions For Many Applications.
service. minimum 3,000 Hour Dpf Ash Service Intervals For Wall-flow Dpf. Through-flow Dpf Is Service-free For The Emissions Life Of The Engine.

Standard Equipment

Air Inlet System
  • Induction manifolds
  • Exhaust manifolds
Control System
  • Starter motor
  • Alternator
  • Electronic Control Unit
  • Sensors for: engine speed, oil pressure, and coolant temperature
Cooling System
  • Cooling packs
Flywheels and Flywheel Housing
  • Flywheel housings
  • Flywheel and starter rings
Fuel System
  • Fuel filter positions
  • Common rail fuel pump and injectors
Lube System
  • Lubricating oil filters
  • Cold start capability to -20° C (-4° F)
  • 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)
  • Diesel Oxidation Catalyst (DOC)
  • Flex pipe connection kit with straight and 90° options for flexibility



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