NP231 Question

the 4wd gear on the YJ has a cage needle bearing...which needs to be pressed out or removed for SYE install...

Not all of them have the needle bearings.

At some time, I think 2000 they changed the input bearing and although thte case dimentions are the same you need to be careful when swaping parts. Also, TJ's have a different tail housing and tail shaft ballancer that don't leak if you loose the slip yoke. Bottom line is none of these things relly effect a swap if you are replacing the entire unit if the slpine count on the input is the same.

Oh yea, on a YJ the case bolts are sae, on the tj they are metric.

Aaron