Clean the performance air filter in your 2004.5-2005 Chevy/GMC 6.6L LLY Duramax with a Filter Cleaning Kit. Getting the right cleaning kit for your air filter is easy. Match up the brand and filter type to ensure you're getting what you need to maintain your filter. Performance filters are typically made with a synthetic or cotton guaze media that can be dry or oiled. You can find Filter Cleaning kits from manufacturers like S&B Filters, AFE, K&N Engineering, and others at XDP. Stay on top of cleaning your resuable air filter to get the most like out of your cone air filter, or drop-in panel filter.