The STIHL 42381404403 is a genuine OEM air filter designed to provide superior filtration and protect the engine of various STIHL cut-off saws. This high-quality filter is essential for maintaining engine performance and longevity by preventing dust and debris from entering critical components. It is a direct replacement part for models including TS 400, TS 410, TS 420, TS 480i, and TS 500i. Regular replacement ensures efficient operation and extends the life of your equipment.