International
International MaxxForce 9
International/Navistar MaxxForce I-6
International MaxxForce 9 legacy 9.3 L inline-six diesel for Class 7-8 DuraStar, WorkStar and International CXT applications. International source material validates the MaxxForce 9 name, I-6 family, 300-330 hp range, serviceability and rebuild positioning; Navistar later announced production cessation for the proprietary 9/10-liter medium-duty platform by fiscal Q2 2018.
Overhaul & repair parts- Manufacturer files
- 1 datasheet
- Last updated
- 2026-08-12
- Package route
- diesel generator sets
- Maximum Mechanical Power
- 246 kW
- Cylinders
- L6
- Displacement
- 9.3 L
- Rated Speed
- 2,200 RPM
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International MaxxForce 9 overhaul & repair parts
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International MaxxForce 9 industrial power context
The International MaxxForce 9 is a high-speed industrial diesel engine rated at 246.1 kW mechanical output at 2,200 RPM. It is used in off-road equipment and can support engineered variable-speed power systems, but its maximum power is not a direct 50/60 Hz alternator rating. Verify the drivetrain, power electronics, cooling, and emissions installation with Volvo Penta before specifying a generator package.
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Technical Specifications
| Brand | International |
| Model | MaxxForce 9 |
| Series | International/Navistar MaxxForce I-6 |
| Configuration | Inline-6 wet-sleeve turbocharged diesel |
| Cylinders | 6 |
| Displacement | 9.3 L |
| Fuel Type | Diesel |
| Ignition Type | Compression Ignition |
| Cooling Method | Liquid-Cooled |
| Emissions Standard | EPA 2007/EPA 2010 on-highway legacy |
| Certifications | International 2008 model-year MaxxForce I-6 announcement, International EPA 07/EPA 10 MaxxForce resource archive, Navistar proprietary 9/10-liter production ceased by fiscal Q2 2018 |
| Country of Origin | United States |
| Year Introduced | 2008 |
| Year Discontinued | 2018 |
Frequently asked questions
What is the maximum power output of the International MaxxForce 9?
The International MaxxForce 9 has a maximum mechanical output of 246.1 kW at 2,200 rpm. This is a variable-speed off-road rating, not a fixed-speed generator-set rating.
What fuel does the International MaxxForce 9 use?
The International MaxxForce 9 is a diesel variable-speed industrial engine.
What is the displacement and cylinder configuration of the MaxxForce 9?
The International MaxxForce 9 is an inline-6 (6-cylinder) engine with a displacement of 9.3 L.
What emissions information is listed for the MaxxForce 9?
This record lists EPA 2007/EPA 2010 on-highway legacy for the International MaxxForce 9. 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 9 still in production?
No — the International MaxxForce 9 is discontinued (production ended around 2018). Its specifications and datasheets remain archived here for reference.
Are reference documents available for the MaxxForce 9?
This page links reference documents for the International MaxxForce 9. Check each document's title, model coverage, revision and rating conditions before using it for selection.