MowerPartsGroup Stihl TS400 Concrete Saw Rebuild Kit Cylinder Crankshaft Belt Filters Gaskets Spark Plug Kit Includes: 1 Cylinder, 1 Piston, 2 Piston Rings, 1 Piston Pin, 2 Retaining Clips, 1 V-belt 1 Decompression Valve, 1 Three pc Air Filter Set, 1 Gasket Set, 1 Bosch Spark Plug, 1 Crankshaft, 1 Needle Bearing Fits Stihl TS400 Chop/Concrete Saws Please see description for full description.