[jeffrsmith]

I really depends on the shape of the damper.

I heard that it was around the 60K mark. I am sure the one in my car had been replaced at some point, but I have no idea when - didn't get any maintenance records with the car. When I pulled the engine it had several large cracks forming around the outside edge, I decided to go with the clutch/pressure plate setup. If you pull the starter you can get a really good look at the damper to see how many cracks it has.

Perhaps someone else will chime in, just speaking from my experience.