this will have to be a sight recognized part not a stamped parts #.. dl manuals for both or a good pic of hubs so you can see what makes 1. 18 and the 19
The xray xb'19 and 18 are almost the same.. 1 can not ell thru pics.. id take a look at the part # and do a comparison.. then you can see what make 1 different from the other.If you find a specific part # thats different from 18/19 as long as its not to pricey and time consuming buy that part 1...