Cat® C4.4 Diesel Engine

Minimum Power
109 HP
Maximum Power
200 HP
Rated Speed
2200 rpm
  • Exterior View

Power Rating

Minimum Power
109 HP
Maximum Power
200 HP
Rated Speed
2200 rpm
Maximum Torque
609 lb-ft @ 1400 rpm

Emission Standards

U.S. EPA & CARB Tier 4 Final, EU Stage V


Engine Configuration
Inline 4, 4-Stroke-Cycle Diesel
105 mm (4.13 in)
127 mm (5.00 in)
4.4 L (268.5 in³)
Turbocharged Aftercooled (TA) or Series Turbocharged Aftercooled (TTA)
Compression Ratio
Combustion System
Direct Injection
Rotation from Flywheel End
Cooling System - Capacity
10.8 L (11.4 qt)
Lube System - Refill
5.2-13.5 L (5.5-14.27 qt)
4 in
5 in
269 in³

Engine Dimensions - Approximate

848.2-867.6 mm (33.4-34.1 in)
845.1 mm (33.3 in)
Weight - Net Dry - Basic Operating Engine Without Optional Attachments
400-420 kg (881.8-926 lb)
741.6-772.4 mm (29.1-30.4 in)
30 in
32 in
Weight - Net Dry - Basic Operating Engine Without Optional Attachments
1,180 lb
35 in

Aftertreatment Dimensions - Approximate

390-453 mm (15.3-17.8 in)
610-675 mm (24.0-26.5 in)
45-65 kg (99-143.3 lb)
478-623 mm (18.8-24.5 in)

Aftertreatment Dimensions

18 in
143 lb
27 in
25 in


A modular and compact core on the Cat C4.4 makes installing the engine on any number of machine applications a relative breeze. And when downsizing from five-liter platforms, OEMs can see a 20% reduction in length, 5% reduction in height and 40% reduction in weight of the engine, significantly reducing installation costs.

Advanced Features

With a 15% increase in power density and 10% increase in torque when compared to its predcessor engine, the compact design of the Cat C4.4 reduces heat loss for more efficient engine output, so operators can conquer even the toughest tasks with relative ease.

Ideal Applications

Industrial, agricultural and construction applications such as: Pumps • Compressors • Chippers • Grinders • Asphalt paving equipment • Hydraulic power units • Bore rigs • Drill rigs • Tractors.

Total Cost of Ownership

There's a lot that can affect the lifetime cost of ownership on your engine. It can be as simple as fluid intake and as complex as weight distribution. Either way, the Cat C4.4 has it covered. When compared to similar 6-cylinder plaforms, the C4.4 saves more than 18% in fluid consumption and is specially balanced to be its most effective, every day.

Cat Dealer Product Support

The Cat C4.4 make maintenance and service routines simple thanks to scheduled maintenance and worldwide dealer support. Cat engine owners can also enjoy the peace of mind engine a five-year warranty brings.


Built-in clean emissions modules keep the Cat C4.4 performing at its peak while also keeping the air around the work site cleaner.

  • Air Inlet System
    • Standard air cleaners
  • Control System
    • Full electronic control system, all connectors and wiring looms waterproof and designed to withstand harsh off-highway environments
    • Flexible and configurable software features and well-supported SAE J1939 CAN bus enables highly integrated machines
  • Cooling System
    • Top tank temperature 108° C (226° F) as standard to minimize cooling pack size
    • 50:50 water glycol mix
  • Flywheels And Flywheel Housing
    • Fitted with SAE3 configuration as standard
  • Fuel System
    • Electronic high pressure common rail
    • Innovative filter design to ensure maximum protection of the engine
  • Lube System
    • Wide choice of sumps for different applications
  • Power Take Off
    • SAE A and SAE B flanges on left-hand side. Additional SAE A flange available on left-hand side. Engine power can also be taken from the front of the engine on some applications. Factory fitted compressors are also available.
  • General
    • Available with or without a balancer
    • Paint: Caterpillar yellow, with optional colors available at request
  • U.s. Epa Tier 4 Final, Eu Stage V Aftertreatment/ Clean Emissions Control Equipment
    • Clean Emissions Module (CEM), consisting of Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC)
    • Selective Catalytic Reduction (SCR)
    • 3" flex pipe connection with straight, 45°, and 90° options for flexibility