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Showing results for tags '3.9'.
So I decided to remove my rear diff which is a 3.7 and install a 3.9 I had laying around. When I romoved the back cover on the one I removed from the car I noticed a little piece in the centre (first pic) that the 3.9 I planned on installing did not have(second pic). Does anyone know what it is? Some kind of locker?