Differential Assembly: Service Precautions

Contact corrosion 09E, 6 Speed A/T
Contact corrosion can occur if non-approved fasteners (bolts, nuts, washers), rivets, plugs, grommets or adhesives are used on the vehicle.

For this reason the manufacturer installs only fasteners with a special surface coating (Dachromet). These parts can be identified by their greenish color.

Rubber, plastic and adhesives also consist of non-conductive materials.

These approved parts are compatible with aluminum. They are also sold as spare parts.

If you are not sure whether used parts can be re-installed, always use new parts.

WARNING!
^ Use only Genuine Audi Parts.
^ Accessories must be approved by AUDI AG.
^ Damage resulting from contact corrosion is not covered by the warranty.