Hi fellas, I am a long time visitor and now have registered and really enjoy this site.
The extension housing seal is leaking on my EL 4litre auto, can you tell me if the BA seal is the same?. I beleive it is a better seal?.
Thanks,
JD.

Yes, they do fit, and are better, has 4 lips instead of 2. Check the play in the slip-yoke bush too, they wear out too.