Carburetor gasket kit compatible with Stihl FS80 FS80AV mower compatible with TK carburetor. The job of the carburetor gasket is to create a seal that keeps air from entering the cylinder, causing the engine to run poorly. It also keeps other debris from getting into the engine. Please compare your old gasket to the one shown in the picture. Used to replace old or damaged carburetor gaskets, effectively keep the cylinder clean and prolong the service life of the carburetor. The kit is easy to use and professional installation is recommended., Manufacturer: LT Easiyl