We use cookies to make your experience better. To comply with the new e-Privacy directive, we need to ask for your consent to set the cookies. Learn more.
BMW 523i Replacement Air Filters
Buy now from K&N's Online Store and get a 100% money back guarantee on any BMW 523i air filter!
- Designed to Increase Horsepower and Acceleration
- High Air Flow with Excellent Filtration
- Top Performance Accessory for BMW 523i Models
- K&N Million Mile Limited Warranty®
Order your K&N replacement air filter Factory Direct today! Help your BMW 523i run better. Fast and FREE SHIPPING with any BMW 523i air filter
Search By Vehicle
Search By Dimension
The item you added to cart DOES NOT FIT your
This item fits your
