Product CHAINSAWGasket Kit (STIHL) Back 4137-006-1050 Gasket Kit STIHL OEM No.: 4137 006 1050 Fitment: Stihl FS74 Stihl FS75 Stihl FS76 Stihl FS80 Stihl FS85 You May Also Be Interested In 4224-007-1012 Gasket Kit STIHL 4223-007-1050 Gasket Kit STIHL 09-801 Piston 09-708 Piston