[FITMENT] Compatible with Audi A4 Q7 (2017-2025), A5 Quattro/A5 Sportback RS5 SQ5(2018-2025), Q5(2019-2025), A6 A7 A8 Q8 S4 S5(2019-2025), Porsche Cayenne(2019-2025) [FITMENT] Compatible with Audi e-tron/e-tron S/e-tron GT/RS e-tron GT(2019-2023), S6/S7/RS Q8/S8/SQ7/SQ8 (2020-2025), RS6 Avant/RS7 (2021-2025) [Reference Number] CF12211, 4M0819439，XC10582C, WP10337, CUK31003, PC99334C, PC99334C, PAB81943900 [Effective filtration] This air filter uses activated carbon, not only filters fine particles, but also effectively adsorbs harmful air gases. Bring you fresher air and more comfortable feeling [OEM QUALITY] AUPZIMI cabin air filter uses 5 layer Filtration Technology,effectively filters 99% of dust, pollen, and other airborne particles,clean and fresh air for you. [CAN BE FOLDED, EASY TO INSTALL] Our air filter is the same size as the factory parts , can be directly replaced. And this filter can be folded so that it can be enter the install place quickly, even if the place is curved. AUPZIMI Cabin Air Filter for 2017-2025 Audi Q7 Q5 A5 Quattro A4 Q8 A6 A7 A8 e-tron R8 SQ5 S5 S4 RS RS5, fits 2019-2025 Porsche Cayenne, Replace 4M0819439A