K&N 04-07 Subaru STi K&N Drop In Air Filter 1965-buick-wildcat-esi6604120 Dyno-Proven Gains up to +22

Dyno-Proven Gains up to +22 HP and +25 Lbs

Each spring is made from the highest quality AE9254V Chrome Vanadium forged to work with our oil-nitrogen filled strut to provide the greatest possible balance of street and track performance

rounded hinges

Work and Last

K&N 04-07 Subaru STi K&N Drop In Air Filter 1965-buick-wildcat-esi6604120 Dyno-Proven Gains up to +22K&N washable, reusable High Flow Air Filters feature a state of the art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K&N's 10 Year Million Mile Limited Warranty. K&N drop in replacement filters are designed to install easily into your