Cummins
Cummins QSK38-G4
QSK38 Series
The Cummins QSK38-G4 is a 37.7-litre V12 diesel engine for generator sets, rated at 1,564 kVA / 1,251 kWe standby power at 1,800 RPM (60 Hz). It is a liquid-cooled engine built in United States. It meets U.S. EPA Tier 2 emissions standards.
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- Manufacturer files
- 2 datasheets
- Last updated
- 2026-05-29
- Package route
- diesel generator sets
- Standby Power · 60 Hz
- 1,564 kVA
- Electrical Output
- 1,251 kWe
- Cylinders
- V12
- Displacement
- 37.7 L
- Rated Speed
- 1,800 RPM
Power Ratings
kWm = mechanical shaft power · kWe = electrical output · kVA = kWe ÷ 0.8 pf
60 Hz1800 RPM
| kWm | kWe | kVA | |
|---|---|---|---|
| Prime Power | 1251.1 | 1126 | 1407.5 |
| Standby Power | 1390 | 1251 | 1563.8 |
Cummins QSK38-G4 generator set context
The Cummins QSK38-G4 is listed here as a diesel generator-drive engine for 60 Hz generator sets, with a headline 1,564 kVA / 1,251 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.
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Technical Specifications
| Brand | Cummins |
| Model | QSK38-G4 |
| Series | QSK38 Series |
| Configuration | V12 |
| Cylinders | 12 |
| Displacement | 37.7 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Tier 2 |
| Country of Origin | United States |
Frequently asked questions
What is the power output of the Cummins QSK38-G4?
The Cummins QSK38-G4 is rated at 1,564 kVA standby / 1,408 kVA prime at 60 Hz (1,800 rpm).
Does the QSK38-G4 run at 50 Hz or 60 Hz?
The Cummins QSK38-G4 is rated for 60 Hz (1,800 rpm).
What fuel does the Cummins QSK38-G4 use?
The Cummins QSK38-G4 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the QSK38-G4?
The Cummins QSK38-G4 is a V12 (12-cylinder) engine with a displacement of 37.7 L.
What emissions standard does the QSK38-G4 meet?
The Cummins QSK38-G4 is certified to U.S. EPA Tier 2 emissions standards.
Is the Cummins QSK38-G4 still in production?
Yes — the Cummins QSK38-G4 is a current production model.
Is a datasheet available for the QSK38-G4?
Yes — an official Cummins datasheet for the Cummins QSK38-G4 can be downloaded from this page.