Caterpillar
Caterpillar D334 Propulsion
300 Series
Caterpillar D334 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
- 269 kW
- Cylinders
- L4
- Rated Speed
- 1,500 RPM
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Caterpillar D334 Propulsion overhaul & repair parts
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Caterpillar D334 Propulsion generator set context
The Caterpillar D334 Propulsion is listed here as a diesel generator-drive engine for 50 Hz generator sets, with a headline 269 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 | D334 Propulsion |
| Series | 300 Series |
| Configuration | L4, marine propulsion diesel |
| Cylinders | 4 |
| 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 D334 Propulsion use?
The Caterpillar D334 Propulsion is a diesel generator-set engine.
What is the cylinder configuration of the D334 Propulsion?
The Caterpillar D334 Propulsion is an inline-4 (4-cylinder) engine.
Is the D334 Propulsion still in production?
No — the Caterpillar D334 Propulsion is discontinued. Its specifications and datasheets remain archived here for reference.
Are reference documents available for the D334 Propulsion?
This page links reference documents for the Caterpillar D334 Propulsion. Check each document's title, model coverage, revision and rating conditions before using it for selection.