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Edelbrock exhaust gaskets #7205 for 1965–1990 Big-Block Chevy Mark IV engines (396–454 CID) use an EnCore HTX-900 fiber/metal core composite that resists heat and retains sealing under load. The design accommodates header expansion with a recovery rate that helps maintain the seal if bolt torque changes; the gasket is profiled for the Mark IV round port size. Intended for reliable exhaust manifold or header sealing.
Edelbrock BBC Exhaust Gasket
