International
International MaxxForce 15
International/Navistar MaxxForce Big Bore
International MaxxForce 15 legacy 15.2 L heavy-duty diesel. Navistar announced production availability in 2011 for ProStar+ and PayStar applications, with ratings up to 500 hp in ProStar+ and up to 550 hp in PayStar vocational trucks. International now keeps MaxxForce 15 materials in its LEGACY ENGINES resource archive, and the Navistar service manual validates the 15.2 L inline-six engine specification.
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- Manufacturer files
- 1 datasheet
- Last updated
- 2026-08-12
- Package route
- diesel generator sets
- Electrical Output
- 410 kW
- Cylinders
- L6
- Displacement
- 15.2 L
- Rated Speed
- 1,500 RPM
International MaxxForce 15 generator set context
The International MaxxForce 15 is listed here as a diesel generator-drive engine for 50 Hz generator sets, with a headline 410 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 | International |
| Model | MaxxForce 15 |
| Series | International/Navistar MaxxForce Big Bore |
| Configuration | 15.2 L inline-6 heavy-duty diesel with MaxxForce Advanced EGR |
| Cylinders | 6 |
| Displacement | 15.2 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | EPA 2007/EPA 2010 on-highway legacy |
| Certifications | International official newsroom model announcement, International current engine resources LEGACY ENGINES archive, ManualsLib Navistar engine manual index |
| Country of Origin | United States |
| Year Introduced | 2011 |
Frequently asked questions
What fuel does the International MaxxForce 15 use?
The International MaxxForce 15 is a diesel generator-set engine.
What is the displacement and cylinder configuration of the MaxxForce 15?
The International MaxxForce 15 is an inline-6 (6-cylinder) engine with a displacement of 15.2 L.
What emissions standard does the MaxxForce 15 meet?
The International MaxxForce 15 is certified to EPA 2007/EPA 2010 on-highway legacy emissions standards.
Is the MaxxForce 15 still in production?
No — the International MaxxForce 15 is discontinued. Its specifications and datasheets remain archived here for reference.
Is a datasheet available for the MaxxForce 15?
Yes — an official International datasheet for the International MaxxForce 15 can be downloaded from this page.