Cummins
Cummins QST30-C
QST30 Series
Cummins QST30-C 30.48 L V12 turbocharged and aftercooled diesel engine. EPA annual certification records list constant-speed configurations from 634 to 783 kWm at 1800 RPM under Tier 2.
- Electrical Output
- 783 kW
- Cylinders
- V12
- Displacement
- 30.48 L
- Rated Speed
- 1,500 RPM
Cummins QST30-C generator set context
The Cummins QST30-C is listed here as a diesel generator-drive engine for 50 Hz generator sets, with a headline 783 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 | Cummins |
| Model | QST30-C |
| Series | QST30 Series |
| Configuration | V12 Turbocharged Aftercooled |
| Cylinders | 12 |
| Displacement | 30.48 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Tier 2 |
| Certifications | U.S. EPA Tier 2 |
| Country of Origin | United States |
Frequently asked questions
What fuel does the Cummins QST30-C use?
The Cummins QST30-C is a diesel generator-set engine.
What is the displacement and cylinder configuration of the QST30-C?
The Cummins QST30-C is a V12 (12-cylinder) engine with a displacement of 30.48 L.
What emissions standard does the QST30-C meet?
The Cummins QST30-C is certified to U.S. EPA Tier 2 emissions standards.
Is the Cummins QST30-C still in production?
Yes — the Cummins QST30-C is a current production model.
Reference
- Canonical page
- /engines/cummins-qst30-c
- Last database update
- 2026-07-25
- Manufacturer files
- No datasheet linked yet
Need this engine?
Need a generator package using this engine? Haifeng Machinery can help with sizing, alternator selection, controller, enclosure, voltage, and compliance support.
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