rear abs sensor part no (s4)

[therealnovaboy]

could someone please tell me what the part no is of a rear abs sensor. its a 98 audi s4

could this be the correct ones?

http://shop.ebay.co.uk/i.html?Model...Parts_SM&_fln=1&_ssov=1&_trksid=p3286.c0.m282