Caterpillar
Caterpillar 3406 Industrial
3400 Series
Caterpillar 3406 Industrial discontinued legacy engine. Source-validated Caterpillar legacy industrial or marine engine model with ongoing parts and rebuild demand.
Overhaul & repair parts- Manufacturer files
- 1 datasheet
- Last updated
- 2026-08-04
- Package route
- diesel generator sets
- Cylinders
- L6
- Displacement
- 14.6 L
- Rated Speed
- 1,500 RPM
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Caterpillar 3406 Industrial overhaul & repair parts
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Caterpillar 3406 Industrial generator set context
The Caterpillar 3406 Industrial 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 | 3406 Industrial |
| Series | 3400 Series |
| Configuration | L6, industrial diesel |
| Cylinders | 6 |
| Displacement | 14.6 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 3406 Industrial use?
The Caterpillar 3406 Industrial is a diesel generator-set engine.
What is the displacement and cylinder configuration of the 3406 Industrial?
The Caterpillar 3406 Industrial is an inline-6 (6-cylinder) engine with a displacement of 14.6 L.
Is the 3406 Industrial still in production?
No — the Caterpillar 3406 Industrial is discontinued. Its specifications and datasheets remain archived here for reference.
Are reference documents available for the 3406 Industrial?
This page links reference documents for the Caterpillar 3406 Industrial. Check each document's title, model coverage, revision and rating conditions before using it for selection.