A4 Quattro Cabriolet L4-2.0L Turbo (BWT) (2009)
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Carefully widen slightly the lower edge on inside of new window weatherstrip - 1 - using a plastic wedge - 2 -.
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Coat this edge and carrier part with e.g. soap solution to assist installation.
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Insert window weatherstrip - 1 - from above and carefully press window weatherstrip completely onto carrier part by hand.