I went to the dealership today but they only had 2 of the 3 o-rings for the Oil filter adapter. Im missing the smallest O-ring and he said its backordered so not sure when theyll get them in. Just wondering if anybody knew the size for the smallest O-ring in the set of 3? Im pretty sure ive read that the small o-ring could be found at parts stores but cant remember where I saw that. I need to fix the OFA asap as its raining oil. Thanks!

Its for a 1990 XJ 4.0.