Hi Chaps. Once again I return from a long absence, and once again I need Audi Help. I went through a brief phase of Alfa Romeo ownership, but I've got that out of my system for a while and am back in the old B5. However. I'm half way through a rear wheel bearing transplant, doing the discs and pads at the same time, and fancied replacing my old, rusty ABS rings. Bought new ones yesterday from Euro's for ten and a quarter quid each. Thing is, they're totally different to the originals. Here's a piccie. You see the two in the image, one has radial holes, the other has bumps. I can see how they'd do the same job, but are they interchangable or do I need a different part? I know that sometimes when you buy a part it can look totally different to what you were expecting, e.g cambelt tensioner design was changed later. Is this the case here? Also, if you guys have replaced yours before, how did you get the new ring onto the hub? Heat or just whacking it with a surgical mallet? Cheers in advance, hope you're all well. Chris.