Clean the aftermarket air filter under the hood in your 1989-1993 Dodge 5.9L 12V Cummins with a Filter Cleaning Kit. To find the right match for your existing air filter, choose the filter brand and media type to ensure you get the right cleaning kit. Manufacturers such as S&B Filters, AFE, K&N Engineering, and others produce Filter Cleaning Kits that are available at XDP. 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. Regular cleaning intervals can help you get the longest life out of your aftermarket air filter.