Description
NEW 2011 CAT C9 ACERT Industrial Diesel Engine
The C9 ACERT features turbocharged and aftercooled induction, electronic engine management, and direct fuel injection technology designed to provide efficient combustion and responsive power delivery. Caterpillar offered the industrial C9 ACERT in multiple factory ratings, allowing the engine to be configured for a wide variety of equipment and applications.
This engine is an excellent choice for customers looking for a new, genuine Caterpillar replacement engine for equipment requiring dependable high-output diesel power. Its robust construction, proven components, and worldwide Caterpillar support make the C9 ACERT suitable for both replacement and OEM applications.
Key Features
- NEW 2011 Caterpillar C9 ACERT diesel engine
- Heavy-duty 8.8-liter (538 cu. in.) displacement
- Inline 6-cylinder, 4-stroke-cycle diesel configuration
- Turbocharged and aftercooled (ATAAC)
- Electronic engine management with Caterpillar ADEM™ controls
- Direct fuel injection
- Multiple factory power ratings available
- Rated speed range of approximately 1,800–2,200 rpm, depending on rating
- Durable heavy-duty engine block and cylinder head
- Designed for excellent power density and dependable operation
- Service-friendly design for easier maintenance
- Available with various flywheel, mounting, and power take-off configurations
- Suitable for replacement, repower, and OEM installations
- Caterpillar engineering and worldwide parts/service support
Specifications
| Specification | Details |
|---|---|
| Manufacturer | Caterpillar (CAT) |
| Model | C9 ACERT |
| Year | 2011 |
| Condition | New |
| Engine Type | Industrial Diesel |
| Configuration | Inline 6-Cylinder |
| Cycle | 4-Stroke Diesel |
| Displacement | 8.8 L (538 cu. in.) |
| Bore | 112 mm (4.41 in.) |
| Stroke | 149 mm (5.87 in.) |
| Aspiration | Turbocharged & Aftercooled |
| Fuel System | Electronic Fuel Injection |
| Engine Control | Electronic ADEM™ |
| Power Range | Approximately 275–375 hp, configuration dependent |
| Rated Speed | 1,800–2,200 rpm |
| Compression Ratio | Configuration dependent |
| Rotation | Counterclockwise from flywheel end |
| Flywheel Housing | SAE No. 1 or SAE No. 2, configuration dependent |
| Approx. Dry Weight | 864 kg (1,905 lb) |
| Approx. Length | 1,091 mm (43 in.) |
| Approx. Width | 827 mm (32.6 in.) |
| Approx. Height | 1,023 mm (40.3 in.) |
| Emissions | Configuration/market dependent |
Applications
The CAT C9 ACERT is suitable for a broad range of demanding applications, including:
- Construction equipment
- Agricultural machinery
- Mining equipment
- Forestry equipment
- Crushers and screens
- Drilling and bore rigs
- Compactors and rollers
- Compressors
- Cranes
- Dredgers
- Forklifts and material-handling equipment
- Hydraulic power units
- Irrigation equipment
- Loaders and earthmoving equipment
- Paving equipment
- Pumps
- Trenchers
- General industrial machinery








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