{"product_id":"aem-induction-21-478wr-performance-cold-air-intake-system-for-subaru-wrx-and-impreza","title":"AEM Induction 21-478WR Performance Cold Air Intake System for Subaru WRX and Impreza","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 original 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 and it is backed by AEM's Lifetime Limited Warranty. Some AEM air intakes are not legal for sale or use in California and other states adopting California emission standards while others are 50 state legal. View the 21-478WR vehicle applications to determine the legal status for each vehicle.\nAEM's Performance Cold Air Intake Systems are designed, tuned and dyno-tested to give your engine more power and acceleration by replacing the restrictive factory air filter, air intake tubing and air box assembly.\n\u003cul\u003e\n  \u003cli\u003eUtilizes washable, reusable, oil-free synthetic filter media that preserves airflow efficiency, traps harmful contaminants, and provides long-term value over disposable filters.\u003c\/li\u003e\n  \u003cli\u003eAEM Lifetime Limited Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUpgrade your Subaru WRX or Impreza with the AEM Induction 21-478WR Performance Cold Air Intake System designed to boost horsepower and torque by replacing the factory air intake components. This system features a high-flow, washable synthetic Dryflow air filter that delivers outstanding airflow, filtration, and long-term performance. The filter is positioned within the original air box space and protected by a heat shield, which helps reduce intake air temperatures to maximize power output. The mandrel-bent aluminum intake tubing, finished with a durable textured red powder coating, ensures smooth airflow and a sleek appearance. Developed and dyno-tested for specific Subaru models, this intake system maintains compatibility with factory emissions control devices, including the mass air flow sensor, ensuring seamless integration and reliable operation. The synthetic filter media is oil-free and designed for up to 100,000 miles of use before cleaning, offering a maintenance-friendly upgrade to your vehicle’s intake system. Easy to install with common tools, the AEM 21-478WR is backed by a Lifetime Limited Warranty, providing long-term confidence in your performance upgrade. Please verify vehicle compatibility for legal use, as some AEM intake systems are not California or 50-state legal. Enhance your vehicle's acceleration and power with this precision-engineered cold air intake system crafted for specific Subaru models, ensuring a perfect fit and optimal performance.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eUtilizes a washable, reusable, oil-free synthetic Dryflow air filter for maximum airflow and filtration longevity\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eConstructed from mandrel-bent aluminum tubing with a textured red powder coated finish for durability and style\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes a heat shield designed to lower intake air temperatures and increase horsepower\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEngineered to retain factory emissions control devices, including the mass air flow sensor\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEasy installation with common tools, backed by AEM's Lifetime Limited Warranty\u003c\/li\u003e\u003c\/ul\u003e","brand":"AEM Induction","offers":[{"title":"Default Title","offer_id":53456853401914,"sku":"aem21-478WR","price":419.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0025\/9709\/3420\/files\/eaca4708c91d3b74d35e93b6749cc7b5.jpg?v=1778792579","url":"https:\/\/www.kamispeed.com\/es\/products\/aem-induction-21-478wr-performance-cold-air-intake-system-for-subaru-wrx-and-impreza","provider":"KamiSpeed.com","version":"1.0","type":"link"}