2004.5-2005 GM 2500HD/3500HD 6.6L LLY Duramax Replacement Filters & Cleaning Kits

Your engine needs clean and cool air to properly function. Ensuring your air filters are clean is critical to prevent harmful debris and dust from entering your engine and causing problems. Our Replacement Filters & Cleaning kits ensure your engine has a steady stream of clean air to ensure it runs reliably, especially in high performance applications such as towing and off-roading. Whether you choose a dry or oiled filter, we offer top quality drop-in replacement filters for maximum engine performance. Maintaining your filters has never been easier with our selection of cleaning kits! Pair your new filter with our excellent selection of Engine Upgrades. Check out our high-performance Cold Air Intakes to pair with your filters and cleaning kits!  GM Duramax Fitments: 2004, 2005 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.