Caterpillar
Caterpillar C9.3
The Caterpillar C9.3 is a 9.3-litre inline-6 diesel engine for generator sets, rated at 344 kVA / 275 kWe standby power at 1,500 RPM (50 Hz). It is a liquid-cooled engine built in United States. It meets U.S. EPA Tier 3 emissions standards.
- Standby Power · 50 Hz
- 344 kVA
- Electrical Output
- 275 kWe
- Cylinders
- L6
- Displacement
- 9.3 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 | — | 250 | 313 |
| Standby Power | — | 275 | 344 |
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | — | 300 | 375 |
| Standby Power | — | 330 | 413 |
Caterpillar C9.3 generator set context
The Caterpillar C9.3 is listed here as a diesel generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 344 kVA / 275 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 | C9.3 |
| Configuration | L6 |
| Cylinders | 6 |
| Displacement | 9.3 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 C9.3?
The Caterpillar C9.3 is rated at 344 kVA standby / 313 kVA prime at 50 Hz (1,500 rpm); and 413 kVA standby / 375 kVA prime at 60 Hz (1,800 rpm).
Does the C9.3 run at 50 Hz or 60 Hz?
The Caterpillar C9.3 is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the Caterpillar C9.3 use?
The Caterpillar C9.3 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the C9.3?
The Caterpillar C9.3 is an inline-6 (6-cylinder) engine with a displacement of 9.3 L.
What emissions standard does the C9.3 meet?
The Caterpillar C9.3 is certified to U.S. EPA Tier 3 emissions standards.
Is the Caterpillar C9.3 still in production?
Yes — the Caterpillar C9.3 is a current production model.
Is a datasheet available for the C9.3?
Yes — an official Caterpillar datasheet for the Caterpillar C9.3 can be downloaded from this page.
Related Engines
Compare Caterpillar C9.3
Reference
- Canonical page
- /engines/caterpillar-c9-3
- Last database update
- 2026-06-28
- Manufacturer files
- 1 datasheet linked
Need this engine?
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