When a worn regulator leaves the front left window stuck, slow or sliding down into the door, this Dorman window regulator, part number 740-570, is designed to take over the job of guiding the glass up and down. It fits many vehicles, among them the 1990-1993 Mercedes-Benz 300D, 1995 Mercedes-Benz E300 and 1994-1995 Mercedes-Benz E320. See the "Vehicles it fits" section for the full list.
This Dorman OE Solutions window regulator is a power window regulator for the front left door position. It is sold as the regulator only, so the window motor is not included.
- Trustworthy replacement: Dorman engineers and tests this regulator to replicate the original unit's fit, function and performance on the listed vehicles.
- Quality assured: During testing it is cycled thousands of times in an actual vehicle door.
- Reliable design: It is engineered in the USA and backed by Dorman's long history in the automotive aftermarket.
- Easy installation: It is reverse-engineered to the original equipment shape and dimensions for a direct fit.
Signs this part may need replacing include a window that moves slowly or unevenly, grinding or clicking from inside the door, glass that tilts or drops, or a motor you can hear running while the glass stays put. Because a motor or switch fault can cause similar symptoms, diagnose the cause first. If the regulator is at fault, 740-570 replaces it.
Interchange: 9553-1055L · 82-3442A · 20-1069 · 21-1069
95531055L · 823442A · 201069 · 211069 · 11A130 · 11R133 · 81748 · 88000 · RPMB017 · WLR1497 · M236 · 1247200346 · 79020 · SK740570 · WL44239 · WR40570
This part cross-references / interchanges with the following part numbers:
11A130, 11R133, 81748, 88000, RPMB017, 9553-1055L, 82-3442A, 823442A, WLR1497, M236, 1247200346, 79020, SK740570, WL44239, WR40570, 20-1069, 21-1069
Frequently Asked Questions
Will this work as a 1994-1995 Mercedes-Benz E320 window regulator?
Yes. It is listed for the 1994-1995 Mercedes-Benz E320 in the front left position, and the "Vehicles it fits" section shows every listed application.
Which other vehicles does Dorman 740-570 fit?
It fits many Mercedes-Benz models, including the 1990-1993 300D and the 1995 E300. The "Vehicles it fits" section shows every listed application.
Does the window motor come with this regulator?
No. Dorman lists 740-570 as a power window regulator only, so the window motor is not included.
What does a window regulator do?
The regulator is the mechanism inside the door that guides the window glass up and down as the power window motor drives it.
What are signs the front left window regulator may be failing?
Common signs are a slow or crooked window, grinding or clicking inside the door, or glass that drops. Diagnose the cause first, since a motor or switch fault can cause similar symptoms.
