Sports air filter K&N 4 inch from K&N Filter Original K&N filter 4 inch air intake K&N filter height 7 inch Outer diameter 6 inch Top diameter 4 inch Sports air filter K&N 4 inch large from K&N Filter Description: Sports air filter from K&N Filter Air intake 4 inch Height 7 inch Outer diameter 6 inch Top diameter 4 inch Features of K&N filter: Increases airflow to the engine Improves engine performance and torque Provides fuel efficiency Easy to install and clean Reusable Choosing the right filter: Make sure to measure your car's air intake before buying the filter Choose the filter suitable for your car's air intake length Ensure the filter is compatible with your car type Tips: Clean your K&N filter regularly to ensure optimal performance Replace your K&N filter every 50,000 km Additional information: Types of K&N filters: URL of K&N filter types How to install a K&N filter: URL of installation guide How to clean a K&N filter: URL of cleaning guide #K&N filter cleaner oil