Airbox or maybe coolant expansion tank mounting grommet
I've been waiting for a very long time for a used set of Brembo calipers to come up on eBay with no luck, so I've bitten the bullet and brought a set from Unit 82. Great price with lines included.
Thanks for posting
I've not installed the ebay kit to fairly compare the 2 sets.
But if Audi offered an OEM kit, you'd be looking in the hundred(s) range [emoji1787][emoji1787]
For me the EM tuning kits have great reputation from a known source.
Not saying the ebay kits are inferior, but I prefer to paid for...