About this part
The mirror adjuster on my E39 stopped moving the mirror in left-right direction, however I could still hear the small motor working. After removing the mirror plate, I found a small plastic component broken. Of course you can't buy this part, only the whole assembly (the one where I marked the pins with red arrows) for 100 USD :). Based on the broken component, I copied the part and printed it. It works perfectly!! Please note that if you need this for up-down motion, you will need to mirror the part before printing. Verify dimensions against the original part and confirm full operation before regular use.