1. order it from Subaru
2. order it from another Subaru dealer
3. if they're not available because they're part of the newer style bolt-on wheel bearing assembly (which I know your rears are) - then you should have found that out in step #1 or #2.
4. find the part number on subaru's online opposedforces website
5. take the old stud with you to compare before you buy one.
they tap right out.
you can readily drive indefinitely with 3 lug studs - so you'll be fine with 4.
2. order it from another Subaru dealer
3. if they're not available because they're part of the newer style bolt-on wheel bearing assembly (which I know your rears are) - then you should have found that out in step #1 or #2.
4. find the part number on subaru's online opposedforces website
5. take the old stud with you to compare before you buy one.
they tap right out.
you can readily drive indefinitely with 3 lug studs - so you'll be fine with 4.