Trick Flow® valve seals are posi-stop seals made from Viton® fluoroelastomer for a long-lasting seal. They prevent oil from leaking into the valve guides and are good for use with dual springs.

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Trick Flow Head Gasket, Multi-Later Steel, MLS, 4.080 in. Bore, .040 in. Compressed Thickness, For Ford FE 390-428, Each

Trick Flow Head Gasket, Multi-Later Steel, MLS, 4.080 in. Bore, .040 in. Compressed Thickness, For Ford FE 390-428, Each

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