The BMC 2019+ Audi A8 (D5) 4.0L TDI 60 Replacement Panel Air Filter is a high-performance air filter designed to replace the original filter in your Audi A8. This filter is constructed from a durable cotton gauze material, and features a unique, highly efficient filtration system that will help to keep your engine running at its best. The filter is designed to provide superior air flow and filtration, while also reducing intake noise and improving fuel efficiency. This filter is easy to install and will provide you with a great performance boost.