The Stihl 11251201626 Air Filter Fleece is a genuine OEM replacement part designed to provide superior air filtration for various Stihl chainsaw models, including the MS 029, MS 039, MS 290, MS 310, and MS 390. This high-quality fleece filter effectively prevents dust, debris, and other contaminants from entering the engine, thereby extending engine life and maintaining peak performance. It is an essential component for routine maintenance, ensuring clean air intake for efficient combustion and reliable operation of your Stihl chainsaw.