DO NOT BUY. Steering shaft fit fine. A little bit involved to install, since it's not telescoping - the steering box has to be unbolted to make room to pull the old shaft out and install this one. But the big issue that is directly related to this part is that for whatever reason, this particular manufacturer decided to design this thing to have slop and play at the vibration dampener, and it's not that way at all with OEM parts... it's not a defect, either. It is literally designed to have slop - there are cam lobes on it that eventually stop the vibration dampener's rotation in either direction. The only parts that should move on a steering shaft are the universal joints - the rest is supposed to be solid, and turn on demand as a unit with no slop - from the steering column, to the box. My steering was 10 times WORSE with this thing than it was with the original, almost 40-year old, worn out shaft, and I didn't realize that this shaft was gonna give me this kind of an issue until after I had installed it... I had to scrutinize the new parts to find the problem (which shouldn't happen - new parts are supposed to work correctly the first time around! There ideally should never be a need to question the quality and function of brand new parts, but I guess we are in the age of cheap crap from China that can't be trusted...). I had to drop $250 on an American-made Borgeson shaft to get this job done right (the shafts available on eBay and Amazon are even cheaper jokes that don't fit the steering box splines at all...). I've installed Crown parts in the past and never had issues (except with the window handles), but this was really bad for sure... the Jeep suffered a lot of downtime due to this poorly designed part. I'm lucky I didn't get into an accident with this thing, either... just spend the money and buy the American Borgeson shaft. You'll thank yourself later...
