Savior Air Filter Cover + Air Filter for Stihl FS120 FS200 FS250 FS300 FS350 String Trimmer Fitment: Stihl FS120 FS200 FS250 FS300 FS350 trimmer Air Filter Cover Replace Part No.: 4134 141 0500 Air Filter Replace Part No.: 4134 141 0300 Pacakge: 1pc air filter cover, 1pc air filter