K&N High-Flow Original Drop In Air Filter for 05 WRX / 99-06 Impreza / 99-04 Legacy 33-2154

K&N replacement air filters are designed to enhance horsepower and acceleration while maintaining superior filtration. With over 1,200 distinct replacement air filters available, K&N caters to the majority of vehicles on the road. These filters are washable, reusable, and custom-designed to fit seamlessly into your existing factory air box. Their simple drop-in design facilitates easy performance enhancement. For most vehicles, merely remove the disposable air filter and replace it with a K&N. Consult the applicable instruction sheet for detailed guidelines. Our stock replacement air filters for street vehicles are covered by K&N's renowned Million-Mile Limited Warranty, ensuring they will be the last air filter your vehicle requires. K&N washable, reusable High-Flow Air Filters feature a cutting-edge design of layered, oiled cotton media engineered to optimize airflow and capture contaminants. These performance air filters are reusable, designed to endure for the entire lifespan of your vehicle, and backed by K&N's No-Hassle Lifetime Limited Warranty. K&N drop-in replacement filters are designed for effortless installation into your factory air box.

Installation Instructions

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