This is an authentic replacement part manufactured for use with lawnmower engines. The bowl drain washer is used to seal the connection between the bowl drain screw and the float bowl. This bowl drain washer is available as an individual replacement part, please see model diagram for associative parts.
This is an original part from Craftsman. The gasket is constructed of plastic, and is compatible with several lawn and garden engines. This item is designed to secure the bowl inside of the float bowl. Please refer to the specific manual and diagrams for repair instructions. The gasket is sold individually. A screwdriver is helpful in making the replacement.