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The K&N 57i induction kit for BMW 320i/323i/325i E34 is a vehicle-specific intake that replaces the restrictive factory air box with a larger washable, reusable filter and custom adapters to boost airflow through the RPM range. The oversized element captures more dirt for longer service intervals and the kit is covered by K&N's No-Hassle Lifetime Limited Warranty; legality varies by state.
K&N Performance Intake Kit BMW 320I, 323I, 325i, E34, 170BHP
