This genuine OEM Air Filter Kit is specifically designed for Stihl TS410, TS420, and TS440 cut-off saws. Manufactured by Stihl to meet the exact specifications of the original equipment, this kit includes both the air filter and pre-filter to ensure your saw’s engine operates smoothly and efficiently. The air filter plays a crucial role in protecting the engine from dirt and debris, while the pre-filter helps extend the air filter's lifespan by capturing larger particles. For optimal performance and durability, choose this authentic OEM replacement part from Stihl to keep your equipment running like new.