A4 8K Wheel Bearing Housing

My friend needs a wheel bearing housing for the right side of her A4 (year 2008).

I have obtained the original part numbers, which are 8K0407254R. From 2009 onwards, the part number 8K0407254AB should have been used.

Has anyone ever had both part numbers in front of them? Are there any differences? Besides the fact that the "R" version is significantly more expensive as an accessory.

The accessory is compatible with AB models from 2008 to 2016.