For Audi Q3 8U 2015 - 2018. For Audi RSQ3 8U 2014-2018. For Audi Q3 F3 Sportback 2019 -. For Audi A7 4G 2011 - 2018. Replace your worn actuator spring with this upgrade, designed to eliminate exhaust buzz, fix fault codes, and ensure smooth valve operation on Audi models.
