How often should I clean my K&N air filter?

K&N recommends cleaning and re-oiling your filter every 50,000 miles for normal highway use. If you drive in dusty conditions, you may need to clean it more often. Use a K&N filter cleaning kit to maintain the filter's performance and warranty.

Does this air filter require oiling?

Yes, this K&N air filter uses an oiled cotton gauze design to trap dirt and debris. The oil helps to improve filtration and airflow. Make sure to use genuine K&N filter oil when servicing the filter to maintain its effectiveness.

Is this filter CARB-legal in California?

K&N filters like this one are street legal in all 50 US states. They meet emissions standards while improving engine performance. No modifications are needed to install this filter.

K&N 02-07 WRX/STi Drop In Air Filter 11in O/S Length / 6.563in O/S Width / 1.063in Height

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K&N Engineering

K&N 02-07 WRX/STi Drop In Air Filter 11in O/S Length / 6.563in O/S Width / 1.063in Height

Name: K&N 02-07 WRX/STi Drop In Air Filter 11in O/S Length / 6.563in O/S Width / 1.063in Height
Brand: K&N Engineering
Price: 68.99 USD
Availability: InStock

$68.99

Drop-in replacement air filter improves airflow. Washable and reusable.

Key Features

Washable air filter — can be used for the life of your vehicle
Designed to increase horsepower — improved airflow over stock paper filters
Drop-in replacement — installs in the factory air box
10-Year/Million Mile Limited Warranty — K&N stands behind their product

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

Will this fit your vehicle?

Compatible with 46 vehicles

Need Help?

631-982-0042

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Since 1957

Family-owned

Product Details

K&N's replacement High-Flow Air Filters are designed to increase horsepower while providing exceptional engine protection, and are covered by K&N's No-Hassle Lifetime Limited Warranty.
SUBARU LEGACY 90-04; IMPREZA 92-07; FORESTER 97-05; LOYALE 90-94

K&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 factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!K&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 No-Hassle Lifetime Limited Warranty. K&N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K&N's most popular product!