BMW X3 Service & Repair Manual: Body cavity sealing

It is only necessary to rewax or seal the affected area after repairing the body.

Only BMW approved products may be used to comply with the six year warranty against rust perforation.

These products protect cavities effectively and permanently against corrosion. Their excellent coating and waterproofing properties let them flow into all inaccessible corners and folds for unsurpassed overall protection.

UNDERBODY AND BODY CAVITY SEALING COMPOUND

For sealing of body cavities, such as doors, Apillars, front, side and cross members, etc.
(Former BMW Part No. 81 22 9 407 479)
3M Part No. 8891
Wurth Part No. 892080
Also: Wurth "Brushable Seam Sealer", Part No. 8901021.

    General information on preservation measures
    The classic quality of BMW automobiles is based on the long-term comprehensive research and testing, the design, the applied materials and the manuf ...

    Body corrosion protection
    To comply with the six year warranty against rust, specially selected waxes and additives produce an elastic, temperature-proof, corrosion inhibit ...

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