99 Avalon TB Idler & Tensioner Bearings - OEM Supplier?

I have a 99 Avalon XLS made in the Kentucky USA plant. I replaced the TB Idler and Tensioner Bearings last year. I believe the original factory bearings were GMB but I didn't make a written note and now I am not sure. I do know for sure they were not Koyo which is the major supplier for Toyota and Lexus Idler and Tensioner Bearings. My 99 Lexus RX300 came with Koyo Idler and Tensioner bearings.

Has anyone replaced their original factory Idler and Tensioner Bearings on their 99 XLS? Remember who made them?

Thanks.