Replacement New 50mm Cylinder Piston & Ring Kit for Stihl 044 Ms440 Chainsaw Fuding Jingyi Rubber & Plastic Co., Ltd. Base Info Model NO.:STIHL 044 MS440 Description Pre:Piston and Cylinder Assembly (48mm) Kit for Stihl 034 036 Ms360 Ms340 Chainsaw Next:New Cylinder Piston Fits Stihl Fs120 Fs200 Fs250 Bt120 Bt121 Ht250 Cylinder Piston & Rings