Clean the aftermarket air filter under the hood in your 1994-1997 Ford 7.3L Powerstroke with a Filter Cleaning Kit. Shop at XDP today and find Filter Cleaning Kits for your S&B, AFE, K&N, AEM, filters and more! Cleaning your reusable air filter often is crucial when it comes to getting the most life out of your drop-in, or cone air filter. Get the right cleaning kit for your existing air filter by choosing the filter brand and media type. Aftermarket filters like those found on a cold air intake system feature an oiled or dry filter that is made from synthetic or cotton gauze filter media.