Head bolt thread sealant

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    What is the best head bolt thread sealant for a series 43. The block already has a lot of helicoils installed, and want to be sure I get the bolts sealed up in one try.


    Hi Sean

    Try Permatex 14H. It’s a teflon based non harding sealant for studs and bolts.

    Happy Motoring



    Thanks, Rick.

    The timing could not be better for me.



    Thank you Rick and William, that is the same stuff we normally use on other engines, nice to be reassured.

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