Thread: Replaceing Pinion Flange on rear diff.

I have found a rear diff from a D1, it has the regular 4 bolt pinion flange. It seems easy enough to remove this and replace it with a factory 3 bolt pinion flange, which will come out of the old diff. Is this easyish or am I missing something? I plan on using a bearing puller to pull the flange out. I guess that the splines are the same on both types.

You may need a slide hammer to remove the spigot covering the flange bolt, but once that bolt is out, they usually come off with a few gentle taps.

Replace the pinon seal while you're there. Yes, easy job