Thread: Series 2 diffs and housings same as series one 86 inch

Yes, but! Series diffs (except some very early 80") are fully interchangeable right up to the end of Series 3 except for Stage 1. But you need to be aware that they will also interchange with Range Rover classic, D1 and some Rover car diffs that may have a different ratio (and someone may have done this in the last fifty years). Also note that late Series 2a 109 utes may have a salisbury diff that is not interchangeable.

The housings are not interchangeable, as the track is wider on the Series 2/2a/3.

However, everything except the actual axle housing and the inner half shafts at the front and the half shafts at the back can be swapped to the Series 1 housings. There are quite a few detail differences, but swapping as assemblies should work.