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.
Overhaul & repair parts- Manufacturer files
- 1 datasheet
- Last updated
- 2026-08-12
- Package route
- diesel generator sets
- Mechanical Output
- 410 kW
- Cylinders
- L6
- Displacement
- 15.2 L
- Rated Speed
- 1,500 RPM
Ask about International MaxxForce 15
Choose parts / service or sourcing. Your message includes this model and page link.
International MaxxForce 15 overhaul & repair parts
Already running a International MaxxForce 15? 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 MaxxForce 15 and your selected categories included. Attach your photos there.
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.
Also searched as
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 information is listed for the MaxxForce 15?
This record lists EPA 2007/EPA 2010 on-highway legacy for the International MaxxForce 15. 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.
Is the MaxxForce 15 still in production?
No — the International MaxxForce 15 is discontinued. Its specifications and datasheets remain archived here for reference.
Are reference documents available for the MaxxForce 15?
This page links reference documents for the International MaxxForce 15. Check each document's title, model coverage, revision and rating conditions before using it for selection.