Rear differential compatibility B3 - B4

[Huw Powell]

What year is it and where are you located?

And can you tell why the diff is permanently locked?

On 6/21/2012 2:35 PM, Radek wrote:
> Hi Guys;
> My son's 90Q broke its rear differential support - an aluminum casting part no. 893-599-131.  All this due, I suppose, to the permanently locked rear differential that we neglected to fix.
> Our options are:
> 1. get new support, fix diff lock, reassemble;
> 2. get new support, install new diff, reassemble;
> 3. possibly:  get the diff from a B4 that's at the local yard - but will it fit?  FA says no, but I recall seeing somewhere that the whole rear assembly (rear subframe and diff) can be transplanted from B4 to B3.
> Is this true?  Any other options?
> TIA.
>
> Radek.
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