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.

Engine Configuration
In-Line 4, 4-Stroke-Cycle Diesel
Bore
99 mm (3.9 in)
Stroke
110 mm (4.3 in)
Displacement
3.4 L (207.5 in³)

Specs

General

Engine Configuration
In-Line 4, 4-Stroke-Cycle Diesel
Bore
99 mm (3.9 in)
Stroke
110 mm (4.3 in)
Displacement
3.4 L (207.5 in³)
Cooling System Capacity
6 L (6.3 qt)
Aspiration
Turbocharged (T)
Compression Ratio
17:1
Combustion System
Direct Injection
Rotation from Flywheel End
Counterclockwise
Engine Configuration
In-Line 4, 4-Stroke-Cycle Diesel
Bore
99 mm (3.9 in)
Stroke
110 mm (4.3 in)
Displacement
3.4 L (207.5 in³)
Cooling System - Capacity
6 L (6.3 qt)

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

Length
610 mm (24 in)
Width
653 mm (25.7 in)
Height
829.5 mm (32.6 in)
Weight - Net Dry (Basic Operating Engine Without Optional Attachments)
251 kg (553.4 lb)

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

Length
Wall Flow: 541 mm (21.3 in). Through Flow: 509 mm (20 in)
Weight
Wall Flow: 20 kg (44 lb). Through Flow: 14 kg (30.8 lb)
Diameter
Wall-Flow: 180 mm (7.1 in). Through Flow: 149 mm (5.8 in)

Power Rating

Minimum Power
60.3BHP
Maximum Power
74.3BHP
Rated Speed
2200 & 2500 rpm

Emission Standards

Emissions
U.S. EPA Tier 4 Final, EU Stage IIIB Nonroad Emission Standards

Engine Dimensions - Approximate

Height
829.5 mm (32.6 in)
Length
610 mm (24 in)
Weight - Net Dry - Basic Operating Engine Without Optional Attachments
251 kg (553.4 lb)
Width
653 mm (25.7 in)

Aftertreatment Dimensions - Approximate

Diameter
Wall-Flow: 180 mm (7.1 in). Through Flow: 149 mm (5.8 in)
Length
Wall Flow: 541 mm (21.3 in). Through Flow: 509 mm (20 in)
Weight
Wall Flow: 20 kg (44 lb). Through Flow: 14 kg (30.8 lb)

Features

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.

World-class manufacturing capability and processes coupled with proven core engine designs assure reliability, quiet operation, and many hours of productive life.

High Performance

Leading-edge technology provides significant improvements in power, torque, fuel consumption and response. Technology includes single smart wastegated turbo systems, durable high pressure common rail technology, and closed circuit breathing system.

Leading-edge technology provides significant improvements in power, torque, fuel consumption and response. Technology includes single smart wastegated turbo systems, durable high pressure common rail technology, and closed circuit breathing system.

Fuel Efficiency

Fuel consumption optimized to match operating cycles of a wide range of equipment and applications while maintaining low operating costs.

Fuel consumption optimized to match operating cycles of a wide range of equipment and applications while maintaining low operating costs.

Fuel & Oil

Tier 4 Interim or Tier 4 Final, Stage IIIB or Stage IV engines require Ultra Low Sulfur Diesel (ULSD) fuel containing a maximum of 15 ppm sulfur, and new oil formulations to support the new technology. Cat® engines are designed to accommodate B20 biofuel. Your Cat dealer can provide more information regarding fuel and oil.

Tier 4 Interim or Tier 4 Final, Stage IIIB or Stage IV engines require Ultra Low Sulfur Diesel (ULSD) fuel containing a maximum of 15 ppm sulfur, and new oil formulations to support the new technology. Cat® engines are designed to accommodate B20 biofuel. Your Cat dealer can provide more information regarding fuel and oil.

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.

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

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
  • 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

Optional Equipment