Upgrade your BMW today with K&N's top - selling replacement air filter! Here's why it's a must - have: • Washable and reusable: Enjoy long - term savings and eco - friendly driving. • Superior airflow: Boost horsepower and enhance your vehicle's performance. • 10 - Year/Million Mile Warranty: Drive with confidence knowing your filter is protected. K&N's drop - in replacement filters are a breeze to install in your factory air box. Start experiencing the difference now!

This K&N air filter is perfect for BMW owners who want to enhance their car's performance. Whether you're driving in the city or on the highway, this filter will help your engine breathe better. It fits specific BMW models from 2011 - 2015, including the 135i, 335i, and X1 35i. It's a simple and effective upgrade that's easy to install in your factory air box. You don't have to worry about replacing it often as it's washable and reusable, and it comes with a great warranty to give you peace of mind.