Hey everyone, My Rear differential has begun to clunk. I've done the research, and have inspected the mounts and CV's from the drive axle. If I move the driveshaft manually by hand there's a good amount of play before it catches. You can hear the thud when switching the car from Park to Drive and Into reverse.

I cannot seem to source any rear diff. rebuild kits for my A4. Do you guys have a list of parts or know of any sources for rebuild kits? Thank you in advance!