Mr. Gasket 5902 - Header Gaskets - Ultra-Seal - 262-400 Chevrolet Small Block Gen I 1955-91

Port Size 1.63" Port Shape Round Collector Gaskets Included No 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.