Detroit Diesel
Detroit Diesel 12V-149
149 Series
Detroit Diesel 12V-149 discontinued legacy engine. Source-validated Detroit Diesel legacy model with ongoing owner, rebuild, marine, generator, and parts-search demand.
Overhaul & repair parts- Manufacturer files
- 1 datasheet
- Last updated
- 2026-08-04
- Package route
- diesel generator sets
- Cylinders
- V12
- Displacement
- 29.3 L
- Rated Speed
- 1,500 RPM
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Detroit Diesel 12V-149 overhaul & repair parts
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Detroit Diesel 12V-149 generator set context
The Detroit Diesel 12V-149 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 | Detroit Diesel |
| Model | 12V-149 |
| Series | 149 Series |
| Configuration | V12, two-cycle diesel |
| Cylinders | 12 |
| Displacement | 29.3 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | Unregulated |
| Country of Origin | United States |
| Year Discontinued | 1999 |
Frequently asked questions
What fuel does the Detroit Diesel 12V-149 use?
The Detroit Diesel 12V-149 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the 12V-149?
The Detroit Diesel 12V-149 is a V12 (12-cylinder) engine with a displacement of 29.3 L.
Is the 12V-149 still in production?
No — the Detroit Diesel 12V-149 is discontinued (production ended around 1999). Its specifications and datasheets remain archived here for reference.
Are reference documents available for the 12V-149?
This page links reference documents for the Detroit Diesel 12V-149. Check each document's title, model coverage, revision and rating conditions before using it for selection.