Caterpillar
Caterpillar C9
C Series
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.
Overhaul & repair parts- Manufacturer files
- 1 datasheet
- Last updated
- 2026-06-28
- Package route
- diesel generator sets
- Standby Power · 50 Hz
- 330 kVA
- Electrical Output
- 264 kWe
- Cylinders
- L6
- Displacement
- 8.8 L
- Rated Speed
- 1,500 / 1,800 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf
50 Hz1500 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 266.7 | 240 | 300 |
| Standby Power | 293.3 | 264 | 330 |
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 300 | 270 | 337.5 |
| Standby Power | 333.3 | 300 | 375 |
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Caterpillar C9 overhaul & repair parts
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Caterpillar C9 generator set context
The Caterpillar C9 is listed here as a diesel generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 330 kVA / 264 kWe / standby rating. Use this page to compare the published engine output, electrical kWe/kVA ratings, emissions level, datasheet availability, and neighboring models before specifying an alternator, controller, enclosure, voltage, and compliance package.
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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 |
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.