7157MRG Mr Gasket COPPER EXH GSKT-CHEV BB

COPPER EXH GSKT-CHEV BB exhaust gaskets Mr. Gasket Copper Seal Header Gaskets 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. Manufactured from “Dead Soft” (solid) .043" thick copper material .051" embossment around each exhaust port to seal irregular surfaces. Total gasket thickness .094" Provides excellent sealing and durability Conforms to and seals minor surface irregularities For high performance street, drag race, oval track and turbocharged (extreme heat) applications