Clean the aftermarket air filter under the hood in your 2019-2023 Ram 6.7L Diesel with a Filter Cleaning Kit. Routine cleaning intervals are crucial when it comes to getting the most life out of your reusable air filter. Get the right cleaning kit for your existing air filter by choosing the filter brand and media type. Manufacturers such as S&B Filters, AFE, K&N Engineering, and others produce Filter Cleaning Kits that are available at XDP. Performance filters are typically made with a synthetic or cotton guaze media that can be dry or oiled.