There are actually four types of gaskets on a GCV 160. Sometimes the kits from Amazon don’t have the one in the upper right. It goes between the metal heat defector plate and the carb.
Some versions have both a metal plate and a cardboard “ plate” the same size. In that case the cardboard acts as a gasket.
Some versions have both a metal plate and a cardboard “ plate” the same size. In that case the cardboard acts as a gasket.