The STIHL 41801402807 Filter Housing is an authentic OEM component designed to securely enclose the air filter on various STIHL power tools. This essential part protects the engine from contaminants by ensuring the air filter remains properly seated and sealed, maintaining optimal engine performance and longevity. It is a direct replacement part for models including FS 90, FS 100, FS 110, FS 130, HT 101, KM 90, KM 100, KM 110, KM 130, and SP 90.