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Mr. Gasket Ultra Seal Valve Cover Gaskets

Mr. Gasket 5863 Ultra Seal Chevrolet big block valve cover gaskets.

Measures 5/16" thick.

Fits 396 and larger 1965-1990 Gen4 Chevrolet big block engines.

Packaged 2 per set.

Manufactured from high density cork/rubber blend gasket material. Creates a positive seal by controlled swelling of the gasket material when exposed to hot engine oil. a black latex rubber coating is applied to the outside of the gasket to help seal minor flange irregularities and eliminate the possiblity of oil leakage.

Mr. Gasket 5863 Ultra Seal Chevrolet big block valve cover gaskets extra thick 5863$29.98

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