What size is the o-ring for the 3 tee vacuum tee on the SC? Mine has little cracks in the oring and I'd like to replace it. Should I go with a larger size? As this one seems like it doesn't fit well.

I am not sure but bring one the vacum hose off when you take in in

Pinky... I think we need a picture...

O ring on a vacuum Tee? No comprendo...

I know the one you mean. Next to the BCA, right? I think you're just gonna have to take the o-ring with you and match it to get a new one.

Yup, that'* the one. It has little cracks in it. I will have to take it to the nearest hardware store and find a match.

Yes, match it, don't go larger or smaller. There'* a calculated compression there and you want the OEM size. Now if the one you have is too large and loose, it could be because it has degraded. Then you will want to get one that looks just like it in all ways except for the minor (inside diameter).