153 Mr Gasket EXH GSKT,BB CHEV SQ PORT

EXH GSKT,BB CHEV SQ PORT Exhaust gaskets; big block Chevy; BBC; round ports; Chevelle; Camaro; Corvette; Chevy II; Nova; header gaskets Mr. Gasket Performance Header Gaskets Fits 1965-1990 Chevrolet 396-454 Big Block. Round Ports, 1.85 Inch x 1.90 Inch Mr. Gasket Performance Header Gaskets are manufactured from a heavy duty high-temperature material, .062 inch