Fits Models: Stihl 066 and MS660 chainsaws
Specifications: Bore Size: 54 mm Bore Size 54 mm Includes Piston, rings, pin and clips Ethanol Not compatible with greater than 10% ethanol fuel
Additional Information: Use with 480-267 Gasket Set 480-267 Gasket Set, Use with 635-239 Intake Manifold 635-239 Intake Manifold, Use with 485-779 Muffler Gaskets 485-779 Muffler Gaskets, Use with 751-045 Ring Compressor Kit 751-045 Ring Compressor Kit, Use with 635-362 Decompression Valve 635-362 Decompression Valve, Use with 635-701 Cylinder Plug 635-701 Cylinder Plug, Use with 500-112 Piston Rings STD 500-112 Piston Rings STD, Use with 623-267 Base Gasket 623-267 Base Gasket