After some deep diving into the search engines, I have come up somewhat empty. I have some belt squealing going on and really want to get it right the first time and not have the car torn apart for a week waiting for parts and such.

My intention is to replace all the bearings themselves, as I do not want to perform the double groove belt upgrade, and don't want to spend extra dollars on replacing all the pulleys when I have the tools to just swap the bearings themselves.

That being said, does anyone have a list of bearing numbers for the idlers and tensioners? Or can confirm that these bearings will fit? I saw this post referenced on the 308 page a few times, but I could not find out if they actually did fit.

https://www.jaguarforums.com/forum/x...acement-65171/

Solved my own problem. In case anyone else looks. Yes, they are the same. If you are doing idlers and tensioners you need:
1xSKF 6303-2RSH/C3 and 3xFAG 6203.2RSR

I would also recommend doing the belt too. I am waiting on parts, but spent a tad cross-referencing part numbers to make sure.

I would buy on Ebay or local to make sure you get genuine parts. Or somewhere other than Amazon.