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The Cat® C4.4 Naturally Aspirated (NA) Industrial Diesel Engine is offered in ratings ranging from 54-56 bkW (72.4-75 bhp) @ 2200 rpm. These ratings meet EU Stage IIIA equivalent emission standards. Turbocharged (T) and Turbocharged Aftercooled (TA) Ratings are also available, ranging from 55.5-83 bkW (74.4-111.3 bhp) @ 2200-2400 rpm. These ratings meet U.S. EPA Tier 3 equivalent, EU Stage IIIA equivalent emission standards. Industries and applications powered by C4.4 engines include: Agriculture, Aerial Lifts, Aircraft Ground Support, Bore/Drill Rigs, Chippers/Grinders, Compactors/Rollers, Compressors, Construction, Cranes, Crushers, Feller Bunchers, Forestry, Forklifts, General Industrial, Harvesters, Hydraulic Power Units, Irrigation Equipment, Loaders/Forwarders, Material Handling, Mining, Mobile Earthmoving Equipment, Mobile Sweepers, Paving Equipment, Pumps, Skidders, Specialty Ag Equipment, Sprayers, Trenchers, Turf and Landscaping and Underground Mining Equipment.

Cat Specs
Photos

General

Bore
105 mm (4.13 in)
Stroke
127 mm (5.0 in)
Displacement
4.4 L (269 in³)
Combustion System
Direct Injection
Compression Ratio
16.2:1
Rotation from Flywheel End
Counterclockwise
Lube System - Refill
11 L (11.6 qt)
Engine Configuration
Inline 4, 4-Stroke-Cycle Diesel
Aspiration
Naturally Aspirated (NA), Turbocharged (T) or Turbocharged Aftercooled (TA)

Emission Standards

Emissions
EU Stage IIIA Equivalent (NA). U.S. EPA Tier 3 Equivalent, EU Stage IIIA Equivalent (T, TA)

Power Rating

Minimum Power
72.4 BHP
Maximum Power
111.3 BHP
Rated Speed
2200-2400 rpm

Engine Dimensions - Approximate

Length
663 mm (26.1 in)
Weight - Net Dry - Basic Operating Engine Without Optional Attachments
291-306 kg (640-674.6 lb)
Height
775-810 mm (30.5-31.9 in)
Width
470-620 mm (18.5-24.4 in)