Fits Models: Stihl MS 461 chainsaws and GS 461 Rock Boss concrete saw
Specifications: Bore Size: 52 mm Bore Size 52 mm Includes Piston, rings, pin and clips Ethanol Not compatible with greater than 10% ethanol fuel
Additional Information: Use with 485-779 Muffler Gaskets 485-779 Muffler Gaskets, Use with 635-195 Intake Manifold 635-195 Intake Manifold, Use with 635-362 Decompression Valve 635-362 Decompression Valve