Can anyone ID this engine component?

[KG26_Alpha]

Originally Posted by SlipBall

It's not likely that the holes are for a linkage point because of the interference of the so called "pin' area (its clearly butted against the disk), there would be no clearence for the linkage mechanical attachment if the disk is designed to rotate 360 degrees. We are all just guessing here, but I think a ball detent is the most likely explanation.

definitely not

this is what I mean by the holes are used for installing linkages