CV joints have different inner spline counts, either 23 or 30. It's totally random, only way you will know is to take yours off and count. If you have abs you will also need to make sure you get a joint with an abs ring. When I replaced mine I got it from here http://www.importcarparts.co.uk they have all the different combinations although it looks as though they are out of 23 splines with abs ring.