Now, choosing the right gaskets is simple with Edelbrock gaskets. They are matched to Edelbrock Performer and Performer RPM cylinder heads and manifolds for optimum flow and performance and the intake port openings are surrounded by a silicone bead for improved sealing. Edelbrock exhaust gaskets are made of high density non-asbestos fiber/metal reinforced composite material that is bonded to a metal core. This gives them excellent sealing performance, load retention, chemical resistance and structural strength. An Edelbrock cylinder head gasket set includes everything you need to install Edelbrock aluminum heads; intake, exhaust, head, waterneck, distributor and valve cover gaskets.