Caterpillar C9
Caterpillar C9 8.8L 6-cylinder diesel engine for generator sets. 300 ekW standby at 60Hz / 264 ekW standby at 50Hz. U.S. EPA Tier 3. Turbocharged Aftercooled.
Production StatusIn Production
C Series
- Configuration
- L6
- Displacement
- 8.8 L
- Fuel
- Diesel
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf
50 Hz1500 RPM
| Rating | Prime | Standby |
|---|---|---|
| Mechanical power kWm | 266.7 | 293.3 |
| Electrical output kWe | 240 | 264 |
| Apparent power kVA | 300 | 330 |
60 Hz1800 RPM
| Rating | Prime | Standby |
|---|---|---|
| Mechanical power kWm | 300 | 333.3 |
| Electrical output kWe | 270 | 300 |
| Apparent power kVA | 337.5 | 375 |
Datasheet & documents
Match the model number on your engine plate to the document. Check its revision date and the speed and duty listed for each power rating.
Technical specifications
Technical Specifications
| Brand | Caterpillar |
| Model | C9 |
| Series | C Series |
| Configuration | L6 |
| Cylinders | 6 |
| Displacement | 8.8 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Tier 3 |
| Country of Origin | United States |
Check your engine model
The Caterpillar C9 is a diesel generator-drive engine for 50 Hz and 60 Hz generator sets, rated at 330 kVA / 264 kWe / standby rating. Match the model and serial number on your engine plate when requesting a manual or parts. The ratings and emissions information below help identify the version fitted to your generator.
Other ways this model is written
Caterpillar C9C Series C9
C9 repair parts
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Frequently asked questions
What is the power output of the Caterpillar C9?
The Caterpillar C9 is rated at 330 kVA standby / 300 kVA prime at 50 Hz (1,500 rpm); and 375 kVA standby / 338 kVA prime at 60 Hz (1,800 rpm).
Does the C9 run at 50 Hz or 60 Hz?
The Caterpillar C9 is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the Caterpillar C9 use?
The Caterpillar C9 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the C9?
The Caterpillar C9 is an inline-6 (6-cylinder) engine with a displacement of 8.8 L.
What emissions information is listed for the C9?
This record lists U.S. EPA Tier 3 for the Caterpillar C9. Confirm the exact engine family, model year, configuration and applicable manufacturer certification documents before specifying it for a regulated project. A database label does not establish certification of a complete generator package.
What is the catalog status of the Caterpillar C9?
The Caterpillar C9 is marked active in this database. Confirm current production and availability with the manufacturer; catalog status is not a live supply check.
Are reference documents available for the C9?
This page links reference documents for the Caterpillar C9. Check each document's title, model coverage, revision and rating conditions before using it for selection.