Savior Air Fuel Filter Spark Plug for Stihl FS38 FS45 FS46 FS55 HS45 FC55 KM55 Trimmer 4140-124-2800 Fitment: Stihl FS38 FS45 FS46 FS55 HS45 FC55 KM55 Trimmer Air Filter Replace Part No.: 4140-124-2800 Package: 1pc air filter, 1pc fuel filter, 1pc spark plug