I discovered a few nights ago that the cheapo strut mount spring seats I put in about a year ago are on their way out, so I'm putting together a shopping cart of parts to replace the front struts entirely. I ran across one part that I don't remember seeing when I swapped out the spring seats: the upper coil insulator, 30666314 (part 24 below).
I remember the top of the coil seating directly into the spring seat (part 7). Am I mis-remembering? If not, why is it in the Volvo parts diagram? Any other time I might just buy it just in case, but they run $50 each.