Detroit Diesel
Detroit Diesel 12V149
Series 149
Detroit Diesel 12V149 29.3L 12-cylinder 2-stroke diesel engine for generator sets. ~700 ekW standby at 60Hz (representative turbocharged rating). Classic 2-stroke, unregulated. 2-cycle, Turbocharged.
Overhaul & repair parts- Manufacturer files
- 1 datasheet
- Last updated
- 2026-06-28
- Package route
- diesel generator sets
- Standby Power · 50 Hz
- 725 kVA
- Electrical Output
- 580 kWe
- Cylinders
- V12
- Displacement
- 29.3 L
- Rated Speed
- 1,500 / 1,800 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf
50 Hz1500 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 583.3 | 525 | 656.3 |
| Standby Power | 644.4 | 580 | 725 |
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 705.6 | 635 | 793.8 |
| Standby Power | 777.8 | 700 | 875 |
Ask about Detroit Diesel 12V149
Choose parts / service or sourcing. Your message includes this model and page link.
Detroit Diesel 12V149 overhaul & repair parts
Already running a Detroit Diesel 12V149? Start with the parts you need, then send your nameplate so we can help check the right references for your engine.
These categories have model-related records. Part numbers need further checking before we display them here.
Let’s identify the right parts.
The model is the starting point. Serial numbers and build configurations can change which parts fit.
- Take a clear photo of the engine nameplate.
- Tell us what needs repair or replacement.
- Send both in WhatsApp to start a fitment check.
Opens WhatsApp with 12V149 and your selected categories included. Attach your photos there.
Detroit Diesel 12V149 generator set context
The Detroit Diesel 12V149 is listed here as a diesel generator-drive engine for 50 Hz and 60 Hz generator sets, with a headline 725 kVA / 580 kWe / 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.
Also searched as
Technical Specifications
| Brand | Detroit Diesel |
| Model | 12V149 |
| Series | Series 149 |
| Configuration | V12 |
| 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 |
Frequently asked questions
What is the power output of the Detroit Diesel 12V149?
The Detroit Diesel 12V149 is rated at 725 kVA standby / 656 kVA prime at 50 Hz (1,500 rpm); and 875 kVA standby / 794 kVA prime at 60 Hz (1,800 rpm).
Does the 12V149 run at 50 Hz or 60 Hz?
The Detroit Diesel 12V149 is available for both 50 Hz (1,500 rpm) and 60 Hz (1,800 rpm).
What fuel does the Detroit Diesel 12V149 use?
The Detroit Diesel 12V149 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the 12V149?
The Detroit Diesel 12V149 is a V12 (12-cylinder) engine with a displacement of 29.3 L.
What is the catalog status of the Detroit Diesel 12V149?
The Detroit Diesel 12V149 is marked active in this database. Confirm current production and availability with the manufacturer; catalog status is not a live supply check.
Are reference documents available for the 12V149?
This page links reference documents for the Detroit Diesel 12V149. Check each document's title, model coverage, revision and rating conditions before using it for selection.