Mr. Gasket 5827 Ultra Seal Chevrolet big block oval port intake manifold gaskets. Port dimensions measure 1.75" wide by 2.16" high. Gasket thickness is 1/16". Fits 396 ci and larger Gen4 engines from 1965-1990.
Manufactured from cellulose/nitrile composition gasket material. Provides excellent sealing and durability. Silicone beading applied around each port to create a tight leak-proof seal. Can be trimmed if necessary for modified ports. Complete with manifold end rail seals and distributor gasket.
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