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![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.
[url=https://www.supermotors.net/registry/media/589993][img]https://www.supermotors.net/getfile/589993/thumbnail/secondaryair.jpg[/img][/url]](https://www.supermotors.net/getfile/918615/fullsize/threadinsertv8.jpg)
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.
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