Caterpillar
Caterpillar G3306B
G3300 Series
Caterpillar G3306B 10.5 L inline-6 natural-gas engine rated from 108 to 157 bkW at 1800 RPM. Caterpillar identifies rich-burn configurations as EPA NSPS site-compliant capable with the required air-fuel-ratio control and aftertreatment.
- Electrical Output
- 157 kW
- Cylinders
- L6
- Displacement
- 10.5 L
- Rated Speed
- 1,500 RPM
Caterpillar G3306B generator set context
The Caterpillar G3306B is listed here as a natural gas generator-drive engine for 50 Hz generator sets, with a headline 157 kW / 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 | G3306B |
| Series | G3300 Series |
| Configuration | L6 Naturally Aspirated or Turbocharged Aftercooled |
| Cylinders | 6 |
| Displacement | 10.5 L |
| Fuel Type | Natural Gas |
| Ignition Type | Spark Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Stationary |
| Certifications | U.S. EPA NSPS Site Compliant Capable |
| Country of Origin | United States |
Frequently asked questions
What fuel does the Caterpillar G3306B use?
The Caterpillar G3306B is a Natural Gas generator-set engine.
What is the displacement and cylinder configuration of the G3306B?
The Caterpillar G3306B is an inline-6 (6-cylinder) engine with a displacement of 10.5 L.
What emissions standard does the G3306B meet?
The Caterpillar G3306B is certified to U.S. EPA Stationary emissions standards.
Is the Caterpillar G3306B still in production?
Yes — the Caterpillar G3306B is a current production model.
Is a datasheet available for the G3306B?
Yes — an official Caterpillar datasheet for the Caterpillar G3306B can be downloaded from this page.
Reference
- Canonical page
- /engines/caterpillar-g3306b
- Last database update
- 2026-07-25
- Manufacturer files
- 1 datasheet linked
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