OUTSIDE OS CARB SPACER 05-0621

OUTSIDE OS CARB SPACER 05-0621. The vendor part number is 05-0621. Read title carefully to know what you are getting. Here is the catalog descrion NOT the title?

Isolator rings and gaskets are found between the carburetor and the intake manifold on many 4-stroke units. In many cases when suffering from a lack of performance, the original isolator ring will be cracked and or the gasket will require replacement.