https://www.oemvwshop.com/5f3854815-041-spoiler-brilliant-black-p387598/thanks. I’ve been searching for 5F3854815 and 5F3854816 but just found links to forums and old eBay listings.
https://www.oemvwshop.com/5f3854816-041-spoiler-brilliant-black-p387599/