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Close-up of V8 cylinder head bolt hole with installed thread ins…

Close-up of V8 cylinder head bolt hole with installed thread insert, hand graphic pointing to it.
Close-up of V8 cylinder head bolt hole with installed thread insert, hand graphic pointing to it.Original file
Close-up of V8 cylinder head bolt hole with installed thread insert, hand graphic pointing to it.

V8 Head Thread Inserts

These are in the bores for the upstream secondary air journals to plug the bores so they don't connect to that journal on the fronts of the heads, and to size them for the bracketry bolts.

Owner caption · Photo 4190 of 6546

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