Caterpillar C4.4 EFI Diesel Engine – Compact, Efficient, and Reliable Power

The Caterpillar C4.4 EFI is a high-performance 4-cylinder, 4.4-liter diesel engine equipped with advanced Electronic Fuel Injection (EFI) technology. Designed for construction machinery, industrial equipment, and generator sets, this engine delivers precise fuel control, strong low-end torque, and excellent fuel efficiency.

With a compact design and water-cooled system, the C4.4 EFI ensures smooth operation, reduced emissions, and long-term durability. Its robust internal components and optimized combustion system provide reliable performance under continuous heavy-duty operation. The EFI system enhances responsiveness and reduces fuel consumption compared to traditional mechanical injection engines.

Ideal for OEMs and operators seeking a modern, efficient, and durable diesel engine for medium-duty applications.

⭐ Key Features

• 4-Cylinder, EFI Diesel Engine
  Delivers reliable torque and power for compact construction, industrial, and generator applications.

• Electronic Fuel Injection (EFI)
  Precise fuel delivery ensures improved fuel efficiency, lower emissions, and smooth operation.

• Durable and Reliable
  Heavy-duty block and reinforced internal components provide long engine life.

• Compact Design
  Small footprint for easy installation in machines with limited engine space.

• Smooth and Low-Noise Operation
  Reduced vibration improves operator comfort and equipment longevity.

• Easy Maintenance
  Accessible service points and global CAT support simplify maintenance and parts replacement.

⭐ Technical Specifications

• Engine Model: CAT C4.4 EFI

• Configuration: 4-cylinder, inline, 4-stroke

• Displacement: 4.4 liters

• Cooling System: Water-cooled

• Aspiration: Turbocharged / EFI

• Power Output: 80–110 kW (approx. 107–148 hp, depending on version)

• Torque: High low-end torque for heavy-duty operation

• Emission Level: EPA / EU compliant versions available

• Starting System: 12V electric start

⭐ Applications

• Compact construction machinery (mini excavators, skid steer loaders, backhoe loaders)

• Industrial equipment (pumps, compressors, material handling machines)

• Diesel generator sets (prime and standby power)

• Agricultural machinery (tractors, harvesters)