Is the purpose of this shield to protect the sensor from breakage during engine R&R or is it more of a heat shield from the header/manifold or both? I forgot to put it back on when installing the engine. Doing a 'risk analysis' to determine if I should take the time to put it back on. I don't really want to pull the plug in the block for fear of not getting off all the old Permatex 2B from the block threads and then end up not having as good of a seal as I have now.
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