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afe Magnum FORCE Intake Coupling Kit (3 IN ID to 2-3/4 IN ID x 3 IN L) Straight Bellow- Black 7.5" O2 SENSOR EXTENSION 2018 Audi S4 Prestige 2021-2023afe Magnum FORCE Intake Coupling Kit (3 IN ID to 2 3 4 IN ID x 3 IN L) Straight Bellow Black