There was no brand name on them. We were a transmission parts distributor and we bought them 50 or so at a time. Sometimes they were black in color other times white, but it made no difference, they both worked as they should. When I had the transmission in my Challenger done, I had the bushings installed at the same time. No issue with the fit. As I said in my earlier post, ANY transmission shop in your area should have them. I was never in a shop that didn't have them.
