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The COBB High Flow replacement air filter is specified for 2015–2020 Subaru WRX STI Redline Intake systems and provides a direct replacement element. It is intended to restore or maintain the intake's airflow characteristics while fitting the listed Redline intake application, offering a serviceable replacement filter option for owners of the specified STI models.
Cobb 15-20 Subaru STI Redline Intake Replacement Filter
