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Caliper Rebuild

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This writeup is for the following car: Audi 90 Quattro 20v


If you need to rebuild the original front brake calipers on the 90Q20V (single piston ATE), you may find that your Audi dealer says there is no rebuild kit. They want you to buy new calipers for $450+. However, this caliper is also used on some VW Vanagons as well as some 3 series BMWs, so rebuild kits are available. Three options for the ATE caliper are (there is also a Girling version, which will likely have different P/Ns):

  1. Automotive Imports

    2. Clawson, MI
    248-280-4700
    Rebuild kit is P/N 15154 or they will rebuild your calipers for about $50 each if you ship them.
  2. NAPA Autoparts

    3. P/N 251698471B
  3. Pep Boys offers rebuilt calipers at about $95 each.
The Audi parts fiche shows a set of seals for the caliper piston is P/N 443 698 471 for the ATE, or 431 698 471 B for the Girling version, which might be all you need (even though the dealer says there is no rebuild kit).