Mr. Gasket 5917 - Header Gaskets - Ultra-Seal - 262-400 Chevrolet Small Block Gen I 1955-91

Port Size 1.50" x 1.82" 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. ? 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 OE replacement, high performance street, drag race and oval track use.