K&N REPLACEMENT AIR FILTER TO SUIT LEXUS IS250 GSE20R 4GR-FSE 2.5L V6This K&N replacement air filter is designed to increase the horsepower and acceleration while providing excellent filtration. It is washable and reusable, and is custom designed to fit into your existing factory air box. Its drop in design means adding performance is simple. With most vehicles you simply have to remove the disposable air filter and replace it with a K&N air filter. This air filter suits Lexus vehicles fitted with 2GR FSE and 4GR FSE