I need to replace my lower isolator and the upper spring seat/isolator as well.
Looking online, I find 2 styles of listings.... one is just an upper spring seat and the other is an upper spring seat as well, but with a spacer. I have no spacer on my oem ones that need replacing. Is the spacer meant to work only with that upper spring seat and goes over the spring seat and locates the actual spring better, where the others, like my oem is molded right to size to begin with?