Replacement Air Filter By K & N 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! Features Designed to provide increased horsepower Multiple layers of woven cotton gauze media Engineered to fit easily into your factory air box Benefits High air flow with excellent filtration Washable & reusable, pre-oiled and ready to ride! Excellent filtration Only needs cleaning every 50,000 miles under normal highway driving conditions Emissions legal in all 50 States Applications 2008 – 2013 BMW M3 What\’s In The Box? 1 – Replacement Air Filter References Installation Instructions Warranty 10-Year/Million Mile Limited Warranty
