Hi Guys, Can anyone help a former X5 owner

[Estroil 4.8is]

If anyone could do me a huge favor, I would be more then thankful. I need to know the thickness of the sensor arm for the rear air suspension set-up on the X5. I know it's a strange question, But it would help me out in a BIG WAY. So if anyone can look behind their rear tire or even throught their rims and just check the thickness of the black arm for the rear air suspension. I included a pic of what to look for. I need the thickness of the black arm that the top bolt of the endlink is attached to. I WISH I still had my X5 to check the measurement myself. Thanks in advance for anyone that can help me out with this.. Rob