Caterpillar
Caterpillar D346 Propulsion
300 Series
Caterpillar D346 Propulsion discontinued legacy engine. Model and horsepower range cross-checked against Caterpillar parts compatibility and legacy engine listing sources; using the upper published rating as representative power.
Overhaul & repair parts- Manufacturer files
- 1 datasheet
- Last updated
- 2026-08-04
- Package route
- diesel generator sets
- Mechanical Output
- 548 kW
- Cylinders
- L6
- Rated Speed
- 1,500 RPM
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Caterpillar D346 Propulsion overhaul & repair parts
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Caterpillar D346 Propulsion generator set context
The Caterpillar D346 Propulsion is listed here as a diesel generator-drive engine for 50 Hz generator sets, with a headline 548 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 | D346 Propulsion |
| Series | 300 Series |
| Configuration | L6, marine propulsion diesel |
| Cylinders | 6 |
| 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 D346 Propulsion use?
The Caterpillar D346 Propulsion is a diesel generator-set engine.
What is the cylinder configuration of the D346 Propulsion?
The Caterpillar D346 Propulsion is an inline-6 (6-cylinder) engine.
Is the D346 Propulsion still in production?
No — the Caterpillar D346 Propulsion is discontinued. Its specifications and datasheets remain archived here for reference.
Are reference documents available for the D346 Propulsion?
This page links reference documents for the Caterpillar D346 Propulsion. Check each document's title, model coverage, revision and rating conditions before using it for selection.