Caterpillar
Caterpillar 3408
3400 Series
Caterpillar 3408 18L 8-cylinder diesel engine for generator sets. 440 ekW standby at 60Hz. U.S. EPA Tier 2. Turbocharged Aftercooled.
Overhaul & repair parts- Manufacturer files
- 2 datasheets
- Last updated
- 2026-06-28
- Package route
- diesel generator sets
- Standby Power · 50 Hz
- 456 kVA
- Electrical Output
- 365 kWe
- Cylinders
- V8
- Displacement
- 18 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 | 366.7 | 330 | 412.5 |
| Standby Power | 405.6 | 365 | 456.3 |
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 444.4 | 400 | 500 |
| Standby Power | 488.9 | 440 | 550 |
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Caterpillar 3408 overhaul & repair parts
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Caterpillar 3408 generator set context
The Caterpillar 3408 is listed here as a diesel generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 456 kVA / 365 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 | 3408 |
| Series | 3400 Series |
| Configuration | V8 |
| Cylinders | 8 |
| Displacement | 18 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Tier 2 |
| Country of Origin | United States |
Frequently asked questions
What is the power output of the Caterpillar 3408?
The Caterpillar 3408 is rated at 456 kVA standby / 413 kVA prime at 50 Hz (1,500 rpm); and 550 kVA standby / 500 kVA prime at 60 Hz (1,800 rpm).
Does the 3408 run at 50 Hz or 60 Hz?
The Caterpillar 3408 is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the Caterpillar 3408 use?
The Caterpillar 3408 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the 3408?
The Caterpillar 3408 is a V8 (8-cylinder) engine with a displacement of 18 L.
What emissions information is listed for the 3408?
This record lists U.S. EPA Tier 2 for the Caterpillar 3408. 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 3408?
The Caterpillar 3408 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 3408?
This page links reference documents for the Caterpillar 3408. Check each document's title, model coverage, revision and rating conditions before using it for selection.