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Cat® C6.6 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 C6.6 The Cat® C6.6 Industrial Diesel Engine is offered in ratings ranging from 89-129.4 bkW (119.3-173.5 bhp) @ 2200 rpm. These ratings met U.S. EPA Tier 4 Interim Equivalent, EU Stage IIIB Equivalent emission standards. Industries and applications powered by C6.6 engines include: Agriculture, Ag Tractors, Aircraft Ground Support, Bore/Drill Rigs, Chippers/Grinders, Combines/Harvesters, 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 and Underground Mining Equipment.
| Power Rating | |
| Maximum Power | 173.5 hp |
| Rated Speed | 2200 rpm |
| Minimum Power | 119.3 hp |
| Emission Standards | |
| Emissions | U.S. EPA Tier 4 Interim Equivalent |
| General | |
| Engine Configuration | Inline 6 |
| Bore | 4.1 in |
| Stroke | 5 in |
| Displacement | 402.8 in³ |
| Compression Ratio | 16.5:1 |
| Aspiration | Turbocharged Aftercooled (TA) |
| Combustion System | Direct Injection |
| Rotation from Flywheel End | Counterclockwise |
| Engine Dimensions - Approximate | |
| Length | 41.9 in |
| Width | 29.6 in |
| Height | 35.7 in |
| Weight - Net Dry - Basic Operating Engine Without Optional Attachments | 1532 lb |
| Aftertreatment Dimensions | |
| Length | 33.6 in |
| Width | 14.4 in |
| Height | 13.9 in |
| Weight | 88.1 lb |
| Aftertreatment Dimensions* | |
| Diameter | 11.1 in |
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.
High Performance
Turbocharger with smart wastegate available on some ratings for fast response, high power, and increased torque.
Fuel Efficiency
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.
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.
Package Size
Ideal for equipment with narrow engine compartments. Multiple installation options minimize total package size.
Low Cost Maintenance
Worldwide service delivers ease of maintenance and simplifies the servicing routine. Hydraulic tappets, multi-vee belts, "no ash service" aftertreatment, and 500-hour oil change intervals enable low-cost maintenance. Many service items have a choice of location on either side of the engine to enable choice of service access. The S·O·SSM program is available from your Cat dealer to determine oil change intervals and provide optimal performance.
Quality
Every Cat engine is manufactured to stringent quality standards in order to assure customer satisfaction.
World-class Product Support Offered Through Global Cat Dealer Network
- Scheduled maintenance, including SOSSM sample
- Customer Support Agreements (CSA)
- Caterpillar Extended Service Coverage (ESC)
- Superior dealer service network
- Extended dealer service network through the Cat Industrial Service Distributor (ISD) program
World-class Product Support Offered Through Global Cat Dealer Network
- Scheduled maintenance, including SOSSM sample
- Customer Support Agreements (CSA)
- Caterpillar Extended Service Coverage (ESC)
- Superior dealer service network
- Extended dealer service network through the Cat Industrial Service Distributor (ISD) program
Tier 4 Interim, Stage IIIB Aftertreatment Features
Regeneration. Passive regeneration completely transparent to the operator.
Mounting. Extensive range of inlets and outlets, as well as remote off- and on-engine installations, provide flexibility for many installations.
Service. Service-free DPF for the emissions life of the engine.
Standard Equipment:
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- Air Inlet System
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- Standard air cleaners
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- Control System
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- 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
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- Cooling System
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- Top tank temperature 108° C (226° F) as standard to minimize cooling pack size
- 50:50 water glycol mix
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- Flywheels And Flywheel Housing
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- Wide choice of drivetrain interfaces, including SAE No. 1, SAE No. 2, and SAE No. 3 configurations
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- Fuel System
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- Electronic high pressure common rail
- ACERT™ Technology
- Innovative filter design to ensure maximum protection of the engine
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- Lube System
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- Wide choice of sumps for different applications
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- Power Take Off (pto)
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- 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.
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- U.s. Epa Tier 4 Interim Equivalent, Eu Stage Iiib Equivalent Aftertreatment / Clean Emissions Control Equipment
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- Clean Emissions Module (CEM), consisting of Diesel Particulate Filter (DPF) and Diesel Oxidation Catalyst (DOC)
- 3" flex pipe connection kit with straight, 45°, and 90° options for flexibility
