Thanks, that's what I needed to know.
My parts supplier must have gotten the part mislabeled. That means I'm not going to have to be trying to convince people to send me the right parts for my chassis for the rest of it's life
Guess I'm off to the dealer to get the right part today.
BTW, anybody be interested in a w123 UCA R&R DIY? (wow, now that's a lot of TLAs
)