The upgraded APR filter unit, featuring a low restriction cotton gauze media, flows 8% more than stock without sacrificing air quality. Fits the Audi C8 RS6/RS7 factory and APR Intake Systems.Features Direct replacement for APR intake system for OEM and APR Intake Systems Flows 8% more than stock without sacrificing air quality. Low restriction cotton gauze media High quality construction Lightly oiled Vehicle Fitment 2021-2026 Audi RS6 Avant 2021-2026 Audi RS7 Sportback Please verify exact fitment (engine, submodel, and trim) before purchasing.Manufacturer Part Number: RF100018Images are for illustration purposes only; actual product may vary.Emissions Note: This product is not CARB approved. It is intended for closed-course competition or off-road use only in California and other CARB states and is not legal for use on pollution-controlled vehicles in those states.