Piston Ring Set Fits Stihl FS400.This is a quality non genuine piston ring set and is suitable for the Stihl FS400 brushcutter.
Please check the diameter of the old piston with the dimensions below to ensure this is the correct item.
Fits Piston Diameter: 40mm
Similar to Stihl Part No: 1123 034 3005
MS Part No: 51040
