Poweka New Pack Of 2 Air Filter Fit For Stihl FS38 FS45 FS55 HS45 FC55  4140-124-2800 New high quality aftermarket air filter Fits stihl FS38 FS45 FS46 FS55 HS45 FC55 Replacement OEM # 4140-124-2800 Package includes 2 x air filters Can not fit FS46.