I was cleaning up after getting everything back together and found this part laying in a towel that I had my old transmission filter and pan sitting in. My 5 year old daughter was "helping" me and was messing with stuff from time to time. I thought I kept a good eye on her but found this part. The only thing I removed from my tranny was the governor, filter and pan. I inspected the governor right before I put it in so I don't think it came from that. Any ideas? It's a TH400 transmission. I was working on some other front suspension parts too but I don't recognize this piece.