{"product_id":"aem-induction-21-681c-performance-cold-air-intake-system-for-audi-a4","title":"AEM Induction 21-681C Performance Cold Air Intake System for Audi A4","description":"The AEM 21-681C 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 Audi A4 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 gunmetal gray 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 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 21-681C vehicle applications to determine the legal status for each vehicle.\nAEM's Performance Cold Air Intake Systems are 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 Audi A4 with the AEM Induction 21-681C Performance Cold Air Intake System designed to enhance horsepower and torque by replacing the factory air filter and intake housing. This system features an oversized AEM Dryflow synthetic washable air filter that delivers superior airflow, filtration, and long-term performance. The filter is housed within the original air box space and protected by a custom heat shield that reduces intake air temperature, helping to increase engine power and responsiveness. The mandrel-bent aluminum intake tubing, finished in a durable gunmetal gray powder coat, ensures optimal airflow dynamics and durability. Developed with consideration for factory emissions systems, including the MAF sensor, this intake maintains compliance with EPA standards and is backed by AEM's Lifetime Limited Warranty. Designed specifically for select Audi A4 models, this cold air intake system provides a significant performance boost while maintaining factory emissions compatibility. Its washable, reusable synthetic filter media minimizes maintenance needs and traps harmful contaminants, offering excellent value over disposable filters. This system is engineered to improve throttle response and acceleration, making it an ideal upgrade for enthusiasts seeking increased engine performance. The AEM 21-681C is a straightforward, durable upgrade that combines performance gains with long-term reliability, perfect for those looking to optimize their vehicle's airflow and power output without sacrificing emissions compliance.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eUtilizes a washable, synthetic Dryflow filter for sustained airflow and filtration efficiency\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHeat shield designed to reduce intake air temperature for improved horsepower\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMandrel-bent aluminum tubing with durable gunmetal gray powder coat for enhanced airflow and durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEngineered to retain factory emissions control devices, including the MAF sensor\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eLong-lasting synthetic filter media that can be used up to 100,000 miles before cleaning\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBacked by AEM's Lifetime Limited Warranty\u003c\/li\u003e\u003c\/ul\u003e","brand":"AEM Induction","offers":[{"title":"Default Title","offer_id":53456838394170,"sku":"aem21-8000DC","price":419.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0025\/9709\/3420\/files\/a693f2ac266c5a9ea7650b94a2e2137c.jpg?v=1778792168","url":"https:\/\/www.kamispeed.com\/products\/aem-induction-21-681c-performance-cold-air-intake-system-for-audi-a4","provider":"KamiSpeed.com","version":"1.0","type":"link"}