K&N Nissan Altima L4-2.5L F/I 13-18 Air Filter

K&N has been the #1 brand in High-Flow performance air filtration since 1969, delivering industry-leading performance and protection for whatever you drive. Now offering a long-life solution for everyday drivers, K&N’s proven technology is available in a premium 18,000-mile filter, providing long service life compared to traditional 12,000-mile disposable filters. Featuring a premium synthetic or cellulose-blend filter media (based on application), these filters deliver up to 99% engine protection. Designed to meet or exceed OEM specifications, they install easily into your factory air box in just minutes.