Ive scoured ebay but cant find what im looking for and am hoping for some help here.

My A4 B7 S-line Quattro has a clear gear knob cover or lense at the top which allows for the gear knob to light up in the dark and illuminate the word quattro.
Unfortunately the plastic bit has come off - has anyone got any idea where I could get a replacement or what its called?!

All the searches on ebay I have done have never shown a gear knob that illuminates like mine....

Thanks