This is a genuine Stihl 41341402801 filter housing, an essential component designed to securely enclose and protect the air filter and carburetor on various Stihl power tools. It ensures optimal air intake and helps extend the lifespan of critical engine components. This original equipment manufacturer (OEM) part is compatible with Stihl FS 120, FS 200, FS 250, FS 300, FS 350 trimmers, FR 350, FR 450, FR 480 backpack brushcutters, and BT 120 C augers, ensuring a precise fit and reliable performance.