It’s not meant to, one will be shaped for the near side, and the other for the off side.
In all seriousness though, i’m sure a quick call will got it resolved. TransporterHQ fitted my B14’s last year. Now getting a knocking from front struts. No quibble they told me to bring it back for them to look at, so going Monday.
I'm sure it will be sorted, they fitted my b14's too. It just doesn't help me for today!
It seems to be missing the hexagonal inset off the inside of the near side unit!