Upgrade the air filter in your 2017-2022 Ford 6.7L Powerstroke with a new Drop-In Air Filter. Direct-replacement drop-in filters are manufactured with a paper filter media, and aftermarket filters are made with an oiled cotton-gauze, or synthetic dry filter media. The air filter in your vehicle serves as the first line of protection against harmful airborne debris that can damage your engine. Find drop-in filters from manufacturers like S&B Filters, AFE, K&N Engineering, and others at XDP. A drop-in air filter is named after the simple installation procedure as it simply drops into the factory airbox in most applications.