This gasket is the correct version for the aluminum valve cover on the Opel GT, as well as for the 'Steinmetz' and 'Irmscher' aluminum valve covers.
It differs from the “standard” gasket in that it has smaller holes for securing the cover to the cylinder head. “Standard” gaskets have holes with a diameter of over 8 mm, whereas this gasket has holes measuring approximately 7 mm. - This is a reproduction made from so-called “rubber cork,” a very modern cork material—top-notch in quality, but still a cork gasket “made by edelschmiede.”
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