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These are on special because the covers have a large amount of small porosity holes in the surfaces near the BUICK script.
The porosity is so small it is difficult to photograph. It is also difficult to see.
A gasket is available: Nailhead valve cover gaskets.
These valve covers can be machined for PCV, oil fill, and breather hoels for an additional charge. This optional machining must be ordered over the phone. Reference this PDF document for more information.
For reference, see our regular BUICK Nailhead V8, Fins And Vintage Script, PML Part Number 11080-2.
Porosity are small pits or holes from little air pockets formed in the casting that were exposed during polishing.
This special should fit and function like a regular part.
This is sold as-is and cannot be returned.
Top view of valve covers.
Inside of valve covers.
Some large amounts of porosity on first valve cover.
Some large amounts of porosity on second valve cover.
