Cylinder head corroded stud.

[CJHenderson]

I have several intake / exhaust studs that has corrosion. Can they be removed and replaced?

[ja17]

Yes, you should use a stud remover tool made for the job. I would use some heat also. Unfortunately sometimes they snap-off during removal. The right tool and heat will minimize the possibility.

https://www.ebay.com/itm/Vintage-1-2-Drive-Stud-Remover-Extractor-KD-Tools/303674096657?hash=item46b462fc11:g:70wAAOSwrnNfUUra