sorry I don't have part took it out and it was thrown away by accident. Don't know if you can sell just the part or buy the whole lock. The finger on the shaft broke that flips the dead bolt.
Dave Sr. from SWISCO responded:
January 31, 2022
Hello,
We carry two similar key cylinders, the 40-123 with the center set screw way and the 40-129 with the offset centered screw way. I believe Pella takes the 40-129 key cylinder with the offset screw way. Take a look and see what you think.