K&N 20-21 BMW R18 1802cc Replacement Air FIlter - BM-1821

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!

Air filters are essential when it comes to your vehicles performance and protection. Shop from our list of air filters from brands like K&N, AEM, Injen, Spectre, Air Raid, aFe, and many more!

Replacing your OEM air filter with a drop in airfilter is a great way to increase airflow without replacing your entire air intake system. Replacing your air filter is cheap, fast, and easy. Another benefit of replacing your OEM filter with a drop in filter is that your can wash your drop in filter. your will never have to replace your OEM filter again.

WARNING: Cancer & Reproductive Harm. For more information, go to www.P65Warnings.ca.gov

For over 50 years, K&N® has been an industry-leader in automotive filtration and technology—offering products to increase performance, protection, and longevity in thousands of vehicle applications for consumers worldwide. HISTORY In the early 1960s, two motorcycle racers, Ken Johnson and Norm McDonald (K&N), developed a ground-breaking new idea for an air filter—one that could perform under the demands of dusty, dirty off-road environments. After experimenting with numerous types of filter media, they discovered that an oiled cotton design allowed the filter to not only capture contaminants very efficiently, but also allowed it to be washed and reused, and the original K&N® High-Flow Air Filter™ was born. Five decades later, K&N® is still innovating industry-leading filtration technology, and offers outstanding protection for everything from top-fuel dragsters to commuter vehicles across the globe.

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