Cat® C4.4 Industrial Diesel Engines offer the perfect balance of durability, fuel efficiency and low emissions. Extensively tested on the job, these engines use a range of common rail fuel systems and advanced control systems to deliver maximum uptime in the harshest environment. They have proven they can handle the toughest applications and deliver superior performance that exceeds the expectations of the most demanding users. 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.
Maximum Power 173.5 HP
Maximum Torque 553 lb-ft @ 1400 rpm
Emissions U.S. EPA & CARB Tier 4 Final
Rated Speed 2200 rpm
Maximum Power 173.5HP
Maximum Torque 553lb-ft @ 1400 rpm
Minimum Power 93.9HP
Rated Speed 2200 rpm
Emissions U.S. EPA & CARB Tier 4 Final
Aftertreatment DOC+SCR or DOC+DPF+SCR
Aspiration Turbocharged Aftercooled (TA) or Series Turbocharged Aftercooled (TTA)
Bore 4.1in
Combustion System Direct Injection
Compression Ratio 16.5:1
Displacement 268.5in³
Engine Configuration Inline 4
Rotation from Flywheel End Counterclockwise
Stroke 5in
Height 34.1in
Length 33.3in
Weight - Net Dry - Basic Operating Engine Without Optional Attachments 926lb
Width 29.1in
Height 15.3in
Length 26.5in
Weight 99lb
Width 18.8in
Diameter 10.6in
Standard air cleaners
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
Top tank temperature 108° C (226° F) as standard to minimize cooling pack size
50:50 water glycol mix
Wide choice of drivetrain interfaces, including SAE No. 2 and SAE No. 3 configurations
Electronic high pressure common rail
Innovative filter design to ensure maximum protection of the engine
Wide choice of sumps for different applications
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.
Available with or without a balancer
Paint: Caterpillar yellow, with optional colors available at request
Clean Emissions Module (CEM), consisting of Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC)
No ash service requirement
Passive regeneration
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
