Caterpillar
Caterpillar G3408
3400
Caterpillar G3408 — 18 L V8 (137 × 152 mm) 4-stroke spark-ignited natural-gas generator-set engine (Cat 3400 series). ~250 ekW, 1500 rpm.
Overhaul & repair parts- Manufacturer files
- 1 datasheet
- Last updated
- 2026-06-11
- Package route
- gas generator sets
- Prime Power · 50 Hz
- 313 kVA
- Electrical Output
- 250 kWe
- Cylinders
- V8
- Displacement
- 18 L
- Rated Speed
- 1,500 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf
50 Hz1500 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | — | 250 | 312.5 |
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Caterpillar G3408 overhaul & repair parts
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Caterpillar G3408 generator set context
The Caterpillar G3408 is listed here as a natural gas generator-drive engine for 50 Hz generator sets, with a headline 313 kVA / 250 kWe / prime 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 | G3408 |
| Series | 3400 |
| Configuration | V8 |
| Cylinders | 8 |
| Displacement | 18 L |
| Fuel Type | Natural Gas |
| Ignition Type | Spark Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Stationary |
| Country of Origin | United States |
Frequently asked questions
What is the power output of the Caterpillar G3408?
The Caterpillar G3408 is rated at 313 kVA prime at 50 Hz (1,500 rpm).
Does the G3408 run at 50 Hz or 60 Hz?
The Caterpillar G3408 is rated for 50 Hz (1,500 rpm).
What fuel does the Caterpillar G3408 use?
The Caterpillar G3408 is a Natural Gas generator-set engine.
What is the displacement and cylinder configuration of the G3408?
The Caterpillar G3408 is a V8 (8-cylinder) engine with a displacement of 18 L.
What emissions information is listed for the G3408?
This record lists U.S. EPA Stationary for the Caterpillar G3408. 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 G3408?
The Caterpillar G3408 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 G3408?
This page links reference documents for the Caterpillar G3408. Check each document's title, model coverage, revision and rating conditions before using it for selection.