When you say suspension arm, I'm not sure what you are referring to. Do you mean the coil spring, lateral links, or something different?
I attached a pic below of the rear suspension. Can you tell me which part you are referring to? Or, can you simply take a pic of the part and upload it for me to see?
Let me know.
Take care and God Bless,
Thursday, February 25th, 2021 AT 7:11 PM