The replacement window regulator for the Mercedes-Benz was from world pack which is supposed to be pretty good. I installed it, reinstalled the motor. First time the window went up and down. The window regulator broke where it has an aluminum piece at wraps around the window. Then I looked at it and I can see it said made in Taiwan. Compared it to the original. Much different. The original is much beefier. Oh well. Got another one coming. Meanwhile, brakes are all off of the big DTS Cadillac and waiting for replacements. Got to move on