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Cold Air Intake System for Subaru

AEM Induction Cold Air Intake System for Subaru

Mfg Part #
21-478WR
NP#
AEM21-478WR
Brand
AEM Induction
Fitment Note
California Air Resources Board Exempt: Yes; CARB EO: D-670-21; AEM - Metal Intake System; Wrinkle Red (CAS)

Fits 2008 to 2014 Subaru Impreza, WRX, WRX STI. See every vehicle

  • Precision-tuned and dyno-validated to enhance throttle response, sharpen acceleration, and improve overall engine efficiency, helping maximize horsepower and drivability.
  • Creates a deeper, more aggressive induction tone that highlights the intake system’s improved airflow.
  • Features low-restriction intake tubing that increases air velocity and high-volume airflow for maximum performance gains.
  • Equipped with a long-life, high-capacity air filter capable of up to 100,000 miles before servicing (depending on driving conditions), reducing maintenance while maintaining strong, clean airflow.
  • Utilizes washable, reusable, oil-free synthetic filter media that preserves airflow efficiency, traps harmful contaminants, and provides long-term value over disposable filters.
$604.79 CAD Free shipping in Canada, ships Monday, October 5
Free shipping in Canada, ships Monday, October 5Free shipping in Canada
Availability: This item is available at a partner warehouse.
Book installation at our Service Centre

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Description

The AEM 21-478WR Performance Cold Air Intake System produces horsepower and torque gains by replacing your vehicle's restrictive factory air filter and air intake housing. This air intake system was designed, tuned and dyno-tested to fit specific Subaru WRX, WRX STI, Impreza WRX and Impreza WRX STI models. Air enters the system through an oversized AEM Dryflow synthetic washable air filter for outstanding air flow, filtration and performance. The air filter is located in the ori ginal air box space and is protected by a heat shield which is designed to reduce intake air temperature and increase horsepower. The intake tubing is constructed from mandrel-bent aluminum featuring a durable textured red powder coated finish. This air intake system was developed to accommodate the engine's factory emissions control devices including the mass air flow sensor. The cylinder shaped AEM Dryflow air filter is made from an oil-free, synthetic filter media that can be used for up to 100,000 miles before cleaning is needed (depending on driving conditions). The air intake system is easy to install with commonly available tools.

Warranty: Limited Lifetime warranty

Fits these vehicles

YearMakeModelSubmodelEngine
2008SubaruImprezaWRX, WRX STI2.5L H4
2009SubaruImprezaWRX, WRX Premium, WRX STI2.5L H4
2010SubaruImprezaWRX, WRX GT, WRX Limited, WRX Premium, WRX SE, WRX STI, WRX STI Special Edition2.5L H4
2011SubaruImprezaWRX, WRX Limited, WRX Premium, WRX STI, WRX STI Limited2.5L H4
2012 - 2014SubaruImpreza-2.5L H4
2012 - 2014SubaruWRX-2.5L H4
2013 - 2014SubaruWRX STI-2.5L H4

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