Caterpillar
Caterpillar 3408B
3400 Series
Caterpillar 3408B discontinued legacy engine. Source-validated Caterpillar legacy industrial or marine engine model with ongoing parts and rebuild demand.
Overhaul & repair parts- Manufacturer files
- 2 datasheets
- Last updated
- 2026-08-04
- Package route
- diesel generator sets
- Cylinders
- V8
- Displacement
- 18 L
- Rated Speed
- 1,500 RPM
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Caterpillar 3408B overhaul & repair parts
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Caterpillar 3408B generator set context
The Caterpillar 3408B is listed here as a diesel generator-drive engine for 50 Hz generator sets. 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 | 3408B |
| Series | 3400 Series |
| Configuration | V8, diesel |
| Cylinders | 8 |
| Displacement | 18 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | Unregulated |
| Country of Origin | United States |
Frequently asked questions
What fuel does the Caterpillar 3408B use?
The Caterpillar 3408B is a diesel generator-set engine.
What is the displacement and cylinder configuration of the 3408B?
The Caterpillar 3408B is a V8 (8-cylinder) engine with a displacement of 18 L.
Is the 3408B still in production?
No — the Caterpillar 3408B is discontinued. Its specifications and datasheets remain archived here for reference.
Are reference documents available for the 3408B?
This page links reference documents for the Caterpillar 3408B. Check each document's title, model coverage, revision and rating conditions before using it for selection.