I have 135k on mine...and they are finished. I probably should have replaced them 40k ago.

I booted up the TIS the other day to check this process out, and it looks like you can get a set of spring compressors and pop the spring off the old strut, and put it on the new one with new hardware. That also appears to be the time to put camber plates in if you are going to do so.

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2001 E53 3.0 5pd