Search for spare parts at the AEC

Hello, dear community!
During a meeting with an S6 AEC user from another forum, but also living in Berlin, he was tired of using a plug that was so "floating" ... always!
After a comparison on his Audi, I saw that a holder was missing. This is screwed to a horizontal screw (left, if standing in front) with the throttle flap. The holder is an angle at which the plug is inserted sideways.
I found a part number on the plug:4A0 971 066 E or F
Whereby the ending with 'E' is not found in the 'nininet'. But I think I can read an 'E'.
Plug is located on the cable harness to the oil pressure sensor or temperature.
Now I don't know if I found the right holder, because only with one part number. the plug the search was a bit difficult.
Before I go shopping, I just want to make sure that this ET number. 077 971 846 is the right one.
Maybe someone's gonna help me.

Thank you,Andreas