K&N Replacement Air Filter (33-5144) Fits: BMW

The K&N Replacement Air Filter (33-5144) is a washable, reusable High-Flow Air Filter engineered with layered, oiled cotton media to improve airflow and capture harmful contaminants. Designed to increase horsepower and acceleration, it provides superior performance while lasting for the entire lifespan of your vehicle.

Each drop-in replacement filter installs easily into the factory air box and is backed by K&N’s No-Hassle Lifetime Limited Warranty. With durable construction and service intervals up to 75,000 miles under normal driving conditions, it’s one of the easiest and most cost-effective performance upgrades available.