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2008-2014 Subaru Impreza WRX and Subaru Impreza WRX STI Air Intake System

Cold Air Induction System for the 2008 through 2014 Subaru Impreza WRX and Subaru Impreza WRX STI
Cold Air Intake System for the 2008 through 2014 Subaru Impreza WRX and Subaru Impreza WRX STI
AEM is proud to introduce its Cold Air Induction System for the 2008 through 2014 Subaru Impreza WRX and WRX STI (part # 21-478WR). AEM cold air intakes are dyno-tested and designed to deliver unsurpassed performance. Each system is tuned on the dyno to deliver superior torque and horsepower while monitoring OBDII sensors, Mass Airflow sensor (MAF) signal voltage and fuel trims to ensure all readings are within OEM parameters, to prevent a check engine light condition.
Subaru Impreza WRX with AEM cold air intake 21-478WR.
Subaru Impreza WRX with AEM cold air intake 21-478WR.


AEM cold air intakes include a heavy-duty steel heat shield with a powder coated black finish, a complete hardware kit and comprehensive installation instructions with each system. The 21-478WR comes in a special wrinkle-red finish specifically for Subaru Impreza models.

AEM 21-478WR performance cold air intake includes AEM's revolutionary DRYFLOW synthetic air filter; the first cleanable, reusable performance air filter that does not require oil to filter and trap dirt and contaminants. For a full list of AEM performance cold air intake systems for Subaru Impreza models visit AEM Cold Air Intakes for the Subaru Impreza or visit AEM Dryflow Air Filters for the Subaru Impreza for a full list of AEM air filters for Subaru Impreza models.

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