5921 Mr Gasket U/S EXH GSKT PONTIAC

U/S EXH GSKT PONTIAC exhaust gaskets; pontiac; GM; firebird; GTO; trans am; header; ultra-seal Mr. Gasket Ultra-Seal Header Gaskets Fits 1963-1979 Pontiac 326-455 V8. Oval/D-ports, 1.55 Inch x 1.94 Inch Manufactured from high-temperature steel core/graphite faced exhaust material. Expanded steel core provides stability and maximum torque retention to eliminate gasket failure. Graphite facing provides excellent heat resistance and thermal conductivity to transfer heat away from the cylinder head. Conforms to and seals minor surface irregularities. High recovery material allows header or manifold flange to stay sealed if flange loses clamp-load. Can be trimmed if necessary for modified port applications. For original equipment replacement, high performance street, drag race and oval track use. Has A Steel Core With Graphite Facing Graphite Facing Has Excellent Thermo-conductivity High Recovery Mat Allows For Better Seal Retention Can Be Trimmed For Port Modifications Expanded Steel Core For Stability These Gaskets Have Slotted End Holes