I believe the early ones were under engineered as the newer (wrong) part was way bigger. I was told that is a complete axle change to improve what I got. I discovered the axle housing was broken from the mount and had a hole in it as well and full of water, I had it repaired at a local machine shop. Maybe that caused the breaking. Before I got it ,it was used in a junkyard with really rough terrain. I'm hoping I have better luck with it. I'm just planning on using it around the house so maybe it will hold up, if not I not I know where to get the parts. I waited like 4 months at the local Kioti dealer telling me they couldn't get the original part. That is why I'm so thankful for all the help. Thank You Rodgerd