Review on Dorman 748-745 BMW Front Passenger Side Power Window Regulator and Motor Assembly: Top-notch Quality for Your Select BMW Models by Douglas Davis

I have been forced to purchase a new power window for my e46 m3 after the original part broke into dozens of pieces. I tried another Revain regulator and was dismayed to be refunded what I paid for days after the seller realized they didn't have them. After some searching I came across this one and am very glad I did. Please understand that I am a mechanical engineer and value proper installation and quality materials, so please do not take this 5 star rating lightly. much smaller box inside. The regulator itself was of good quality and well lubricated. The motor appeared to be quite small compared to the OEM motor, but advances have been made in electric motors in the last 10 years and that's to be expected. You will need to reuse the nuts you removed when you removed your old regulator. The fit was perfect. No customization required. Can't screw it up, no problem once I plug it in and play around with my properly working window. Same speed and noise level as the original system (after replacing the door panel. It seemed a little louder without the panel but I had no comparison to it). Total installation time < 30 minutes from start to finish.