New Nikasil 44mm Cylinder Piston Kits Air Filter Muffler Gaskets Fuel Line Hose Tube Fuel Filter Decompression Valve fit for Stihl 026 Ms260 New high quality replacement parts Cyinder diameter is 44mm For stihl ms260 026 Air filter size: length 3 1/2" width 3 1/10" Note:The white air filter is new ,the black one is old,please check and compare with your own one carefully before you order from us,thanks