Vehicle Fitment
Chevy
GMC
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Copper Seal Header Gaskets by Mr. Gasket®. Fits 1965-1990 Chevrolet 396-454 Big Block with Round Ports. Mr. Gasket CopperSEAL Header Gaskets are a high quality copper gasket that performs extremely well and are reusable. We recommend this in all racing and high performance applications. They are for stock heads unless indicated, and work well in high heat and turbocharged applications.