What wrench or socket to use

[PAX5]

Thanks again!

You said (recommend?) to use a new nut on assembly ... the parts guy at the BMW dealership said the same ...

Price for one "nut"? A whopping $17!!! With my discount it was still $14. I declined.

Of course I'll buy it once I am convinced that I must replace it, but I looked at the nut very carefully and could not find any design features that suggest that the nut can be compromised after use or otherwise rendered unusable after being installed once. Comments?

Also, I bought the whole arm ($200/ea!): so no need to separate the ball joint from the trust arm.

I have the screw style Ball Joint Separator.