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 Power45.0 bkW
Maximum Power55.4 bkW
Rated Speed2200


2500 rpm
Emission StandardsEmissions
us epa tier 4 final eu stage iiib nonroad emission standards
GeneralEngine Configuration
inline 4 4strokecycle diesel
GeneralBore
99 mm 39 in
GeneralStroke
110 mm 43 in
GeneralDisplacement
34 l 2075 in³
GeneralAspiration
turbocharged t
GeneralCompression Ratio
171
GeneralCombustion System
direct injection
GeneralRotation (from flywheel end)
counterclockwise
GeneralCooling System Capacity
6 l 63 qt
Engine Dimensions (Approximate. Final dimensions dependent on selected options)Length
610 mm 24 in
Engine Dimensions (Approximate. Final dimensions dependent on selected options)Width
653 mm 257 in
Engine Dimensions (Approximate. Final dimensions dependent on selected options)Height
8295 mm 326 in
Engine Dimensions (Approximate. Final dimensions dependent on selected options)Weight - Net Dry (Basic Operating Engine Without Optional Attachments)
251 kg 5534 lb
Aftertreatment Dimensions (Approximate. Final dimensions dependent on selected options)Length
wall flow 541 mm 213 in through flow 509 mm 20 in
Aftertreatment Dimensions (Approximate. Final dimensions dependent on selected options)Weight
wall flow 20 kg 44 lb through flow 14 kg 308 lb
Aftertreatment Dimensions (Approximate. Final dimensions dependent on selected options)Diameter
wallflow 180 mm 71 in through flow 149 mm 58 in
C3.4B, Less than 56 kW (75 hp) 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 - general
Cold start capability to -20° C (-4° F)
Paint: Caterpillar yellow, with optional colors available at request - us epa tier 4 final eu stage iiib aftertreatmentclean emissions control equipment
Diesel Particulate Filter (DPF)
Diesel Oxidation Catalyst (DOC)
Flex pipe connection kit with straight and 90° options for flexibility