Hi everyone

I'm in dire need of a part for my 2001 LS430 rear left door window but I cannot find it anywhere.
The part I'm in need of is a guide bushing that the Window regulator arm pops into to move window up and down.
I have searched everywhere but to no avail. I've looked at door details at supply houses and ordered what I thought were the part but wasn't. I unfortunately do not have a repair manual so I don't have an oem part number. I would appreciate any help.

Thanks