Edelbrock 3833 Performer Intake Manifold Gasket Provides excellent sealing on rough, irregular flange surfaces Designed to match with Performer Series manifolds and heads Features an embossed silicone bead surrounding the ports for a clean positive seal Provides optimum sealing in intermittent operating temperatures up to 400 degrees Fahrenheit Impervious to most chemicals, including gasoline, alcohol, coolant and oils