Mr. Gasket 5936 - Header Gaskets - Ultra-Seal - 383-440 Chrysler Big Block B/RB 1959-80

Port Diameter 1.78" x 1.48" Port Shape Square 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.