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.
Overhaul & repair parts- Manufacturer files
- 1 datasheet
- Last updated
- 2026-07-25
- Package route
- gas generator sets
- Mechanical Output
- 157 kW
- Cylinders
- L6
- Displacement
- 10.5 L
- Rated Speed
- 1,500 RPM
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Caterpillar G3306B overhaul & repair parts
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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 information is listed for the G3306B?
This record lists U.S. EPA Stationary for the Caterpillar G3306B. 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 G3306B?
The Caterpillar G3306B 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 G3306B?
This page links reference documents for the Caterpillar G3306B. Check each document's title, model coverage, revision and rating conditions before using it for selection.