The OEM NOS STIHL Gasket 1129-129-0900 is a genuine replacement gasket designed for STIHL chainsaws with a 2-stroke engine. This gasket is compatible with chainsaw models that use gasoline as a power source and does not require assembly. Packaged in a unit quantity of 1, this high-quality gasket is essential for maintaining the sealing and performance of your STIHL chainsaw.