Cummins
Cummins QSX15
QSX15 Series
Cummins QSX15 14.948 L L6 diesel engine for generator and industrial constant-speed applications. EPA annual certification data lists up to 563 kW mechanical power at 1800 RPM. U.S. EPA Tier 3 / U.S. EPA Final Tier 4. Electrical ratings are stored only where an official Cummins generator-set rating card identifies the exact engine model.
Overhaul & repair parts- Manufacturer files
- 1 datasheet
- Last updated
- 2026-07-24
- Package route
- diesel generator sets
- Mechanical Output
- 563 kW
- Cylinders
- L6
- Displacement
- 14.948 L
- Rated Speed
- 1,500 RPM
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Cummins QSX15 overhaul & repair parts
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Cummins QSX15 generator set context
The Cummins QSX15 is listed here as a diesel generator-drive engine for 50 Hz generator sets, with a headline 563 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 | QSX15 |
| Series | QSX15 Series |
| Configuration | L6 |
| Cylinders | 6 |
| Displacement | 14.948 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | U.S. EPA Tier 3 / U.S. EPA Final Tier 4 |
| Certifications | U.S. EPA Tier 3, U.S. EPA Final Tier 4 |
| Country of Origin | United States |
Frequently asked questions
What fuel does the Cummins QSX15 use?
The Cummins QSX15 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the QSX15?
The Cummins QSX15 is an inline-6 (6-cylinder) engine with a displacement of 14.948 L.
What emissions information is listed for the QSX15?
This record lists U.S. EPA Tier 3 / U.S. EPA Final Tier 4 for the Cummins QSX15. Confirm the exact engine family, model year, configuration and applicable manufacturer certification documents before specifying it for a regulated project. A database label does not establish certification of a complete generator package.
What is the catalog status of the Cummins QSX15?
The Cummins QSX15 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 QSX15?
This page links reference documents for the Cummins QSX15. Check each document's title, model coverage, revision and rating conditions before using it for selection.