Those are the VVT solenoid gaskets. It requires a special tool that’s about $50 to remove and replace them. And you have to remove the valve cover to do it. You can replace the entire valve cover, with all the gaskets, for less than $80 from Tasca. There is a great YT video on how to R&R the valve cover.
I’ve got the same leak, just have to get motivated to do it.
I’ve got the same leak, just have to get motivated to do it.