Part number mis-match?

[th3_f15t]

Hey all, I'm looking for new rear brake dust shields to fit an R32 setup, and the part numbers I have (from the ones that came with the setup) are:

1K0 615 611 S
1K0 615 612 S

I can only find, on eBay, ones with the same numbers, bar the S, the listing shows is as AB instead. The feature to use your vehicle details list them as fitting an R32, but un-sure if they will. Here's the listing;

http://www.ebay.co.uk/itm/Genuine-VW-MK5-Golf-Jetta-A3-Left-Brake-Disc-Cover-1K0615611AB-/360384490512?pt=UK_CarsParts_Vehicles_CarParts_SM&fits=Cars+Year%3A2007|Car+Make%3AVW|Cars+Type%3A2.0+GTI|Plat_Gen%3AMK+V|Model%3AGolf&hash=item53e896ec10

Any advice is appreciated. Getting to a main dealer is a little tricky when my car isn't working...