Might as well. The old seal will be less flexible than a new one, so even if you did somehow manage to remove the window without cutting the seal, getting it back in, would be a bear.

Just be careful with trim removal - don't bend it.

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It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein


09 Jetta TDI
1985 300D