AEM Cold Air Intake System (Gunmetal Gray) - 2008-2014 Subaru WRX / 2008-2014 Subaru STI
AEM Cold Air Intake System (Gunmetal Gray) - 2008-2014 Subaru WRX / 2008-2014 Subaru STI
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AEM21-478C
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AEM21-478C
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AEM21-478C
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AEM21-478C
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AEM21-478C
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AEM21-478C
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AEM21-478C
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AEM21-478C
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AEM21-478C
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AEM21-478C
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AEM21-478C
AEM Induction
AEM Cold Air Intake System (Gunmetal Gray) - 2008-2014 Subaru WRX / 2008-2014 Subaru STI
AEM Cold Air Intake System (Gunmetal Gray) - 2008-2014 Subaru WRX / 2008-2014 Subaru STI
Couldn't load pickup availability
- AEM DRYFLOW synthetic washable air filter, oversized conical design
- Mandrel-bent aluminum intake tube
- Custom heat shield with factory fresh air duct attachment
- Up to 100,000 miles between filter services
Increased Horsepower and Torque, Genuinely Low Maintenance
AEM cold air intake systems are designed to increase horsepower and torque, built around an oversized AEM DRYFLOW synthetic washable air filter engineered to provide outstanding airflow, filtration, and performance. That oversized, conical filter design allows up to 100,000 miles between filter services under normal highway driving conditions, a genuinely low-maintenance advantage over a smaller factory-style filter that needs replacement far more often. The system also features a mandrel-bent aluminum intake tube and high-quality hardware throughout. It's the kind of upgrade that quietly does its job without ever needing a second thought.
A Heat Shield That Actually Does Its Job
A custom heat shield helps protect intake air from the high temperatures found in the engine bay, with the factory fresh air duct attaching directly to the heat shield to maintain that cool-air intake path. That thermal management matters, since an intake pulling hot engine bay air undermines much of the performance benefit of the upgrade in the first place. The entire system typically installs in less than 90 minutes, keeping the upgrade accessible for a home garage installation. That's real, functional engineering, not just a marketing claim.
Straight From Subispeed
A genuine horsepower and torque upgrade for 2008-2014 WRX / 2008-2014 STI with real thermal management and a filter that goes 100,000 miles between services.
This Part Fits:
| Year | Make | Model |
|---|---|---|
| 2008-2014 | Subaru | WRX |
| 2008-2014 | Subaru | STI |

| Specification | Value |
|---|