Replacing your stock air filter isn't a choice when it comes to the OEM paper filters. If you upgrade to the Mazdaspeed 3 HKS Air Filter, you'll never have to replace it again. The HKS filter is made of a foam type element and features a hard plastic structure which will hold strong for the life of the car. The Mazdaspeed 3 HKS filter is washable and reusable and catches the majority of all debris and dust entering the intake from the outside. Keeping your turbo and intake system clean is a necessity and will keep your engine running strong for longer when proper filtration is applied.
HKS Limited Warranty
