WTB '91 Audi 90 20v Rear Diff

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10-23-2012, 09:22 AM

Vince20v

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WTB '91 Audi 90 20v Rear Diff

Hey guys,

I have a 1991 90 20v and the rear differential is going bad on it, and I can’t seem to locate one around Columbus, OH…

Is there anyone with one in the area I could pick up one from? I can’t seem to find one to purchase online either

What other rear diffs bolt up to the 90 20v?

Help!

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10-24-2012, 09:22 AM

90quattrocoupe

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Quote:

Originally Posted by Vince20v

What other rear diffs bolt up to the 90 20v?

Help!

CoupeQ, and B3 10V. You have to change out the output flanges on the 10V diff, and put in the ones from your 20V. The 10V should be 90mm and your 20v should be 100mm. This way they match your axles.

Greg W.

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10-24-2012, 09:27 AM

Harzley

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I'm sure Toledo Joe will have one.

http://www.audifans.com/marketplace/...Parts&id=20154

I seem to find at least one 90 in the local pick and pull yards up here in Detroit. Retrieved the rear bracket for the dif from one earlier this year.