Quote Originally Posted by Hobby Racer View Post
Unfortunately most aftermarket CV joints are NOT the same and not compatible with the OEM ones. They have the same spline configuration but not the same tri-lobe setup as you have found out. I had to go to my local NAPA store and physically look through ever Subaru Impreza CV joint to find one that was rebuilt using the green OEM CV cup and therefore had the correct tri-lobe.
So, if I get a true Subaru OEM inner CV joint it should fit? Or is that 80033 axle not a Subaru OEM axle? I ask because the 80033 and two spare 80237 axles have obvious different spline sizes.