- High-quality aftermarket air filter cover and housing assembly designed for reliable performance and durability. - Compatible with Stihl models: FC 55, FS 38, FS 45, FS 45C, FS 45L, FS 46, FS 46C, FS 55, FS 55C, FS 55R, FS 55RC, FS 55T, FS 55TC, HL 45, HL 45C, KM 55, KM 55C, KM 55R, and KM 55RC. - Direct replacement for Stihl OEM Part Number 4140 140 2850 (41401402850), ensuring a perfect fit and seamless installation. - Made from high-quality materials to promote optimal airflow and engine performance, helping to extend the life of your equipment. - Ideal for lawn care professionals and homeowners who rely on Stihl outdoor power tools for grass trimming, hedge cutting, and landscaping tasks. - Ensures that your equipment runs efficiently by keeping dirt and debris out, which can lead to engine wear and reduced performance. - Perfect for maintenance and repair needs, saving you time and money on replacements. - Designed for easy installation; simply replace your old or damaged cover and housing assembly to restore function. - Enhances equipment reliability in demanding working conditions, ensuring consistent performance for all your outdoor tasks.