Review on Dorman 740 455 Mercedes Passenger Regulator by Kenny Davey

Purchased this window regulator after noticing the rear window slowly lowering while driving. An even bigger problem was slow lowering even when the car was parked, which isn't very good for safety. This Dorman window regulator does what it has to do, holds the window up when it should and lowers it when I want it to. j. The only thing I found a bit odd was the large "Made in Taiwan" sticker on the metal arm when I took it out of the box. My guess is that Dorman outsources production of some components but may make the final product in the US. I tested it and the window goes up and down smoothly. Good product at a good price.