PN 51168258025 LH Sun Visor. $155.48 Realoem.com

You can try some scrap yards to see if you can get another one. I would say they will charge you $80 for it.

Please enter in your sig the type of E53 you have.

Example

2001 E53 3.0i
Auto Tranny
Jet Black
Tan Interior
Sport Package
Et

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2011 E70 50i M Sport