Upgrade to Mr. Gasket Aluminum Layered Header Gaskets and eliminate blown exhaust gaskets forever. They conform to warped and damaged surfaces to create an airtight, leak-proof seal and will not shrink or deteriorate EVER. Features: Withstands Intense Exhaust Heat Reusable header, exhaust manifold and collector flange gaskets Resists Deteriorating Manufactured from "dead soft" aluminum layers - .125" thick Easy Removal For Disassembly Conforms easily to surface irregularities (warped flanges) Compresses down to 0.060" to create a tight leak-proof seal Will not shrink, deteriorate, or blow out- eliminating gasket leaks For high performance street, drag race and oval track use