- 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 and can be reused many times - Can be trimmed if necessary for modified ports - For OE replacement, high performance street, drag race and oval track - Packaged 2 per set