The K&N 57i induction kit for Mazda 6 2.3L (2002–2010) replaces the factory air box with a larger washable, reusable filter and custom adapters to increase airflow across the RPM range. The element's greater surface area lowers restriction and holds more dirt for extended service intervals; the kit is covered by K&N's No-Hassle Lifetime Limited Warranty and may be restricted by some emissions regulations.
K&N Performance Intake Kit MAZDA 6, 2.3L, 16V, L4, 164BHP