K&N Engineering 2006+ Civic Si Drop-In Air Filter

K&N Engineering Drop-In High-Flow Washable Air Filter for 2006+ Civic Si This listing is for one filter. Upgrade airflow and performance with the K&N Drop-In High-Flow Washable Air Filter. Engineered with layered, oiled cotton media, this filter improves air intake while effectively capturing dust and contaminants to help protect your engine and increase horsepower. Key Benefits Improved airflow: High-flow design increases engine breathing for better throttle response and potential horsepower gains. Reusable & washable: Durable construction lets you clean and reuse the filter for the life of your vehicle — no frequent replacements required. Easy install: Drop-in replacement fits directly into the factory air box for fast, tool-free installation on the 2006+ Civic Si. Long-term value: Built to last and backed by K&N’s 10-Year/Million Mile Limited Warranty . Why Choose K&N K&N is a trusted name in performance filtration. This drop-in filter combines proven materials and precision design to deliver reliable protection and measurable performance gains without sacrificing convenience. Perfect for drivers looking for an effortless upgrade that provides cleaner airflow, better performance, and long-term savings. Install a K&N Drop-In High-Flow Air Filter today and feel the difference.