Dorman 740-455 rear right window regulator for the 1990-1991 Mercedes-Benz 300SEL and other vehicles moves the electric power window glass up and down. This Dorman OE Solutions window regulator is the regulator only, so the window motor is a separate part.
- Part of the Dorman OE Solutions product line
- Cycle-tested thousands of times in an actual vehicle door
- Plastic gear and a cable made of plastic and metal
- Electric window operation with a bolt-on attachment
Quick facts
- Part: Dorman 740-455 window regulator
- Fits: 1990-1991 Mercedes-Benz 300SEL and other vehicles
- Position: Rear right
- Material: Plastic gear
- Condition: New
A window that drops into the door, tilts in its track or grinds when you press the switch can mean the regulator is worn. The motor or the switch could also be behind a slow or dead window, so work out which part has failed before replacing anything; with the engine off, look for glass that hangs crooked or sits loose. If a worn regulator is the cause, this part replaces it.
Fits
This regulator is listed for a wide range of Mercedes-Benz models, including the 1988-1991 Mercedes-Benz 300SE and the 1991 Mercedes-Benz 350SD, with one needed at the rear right door. If your car is not named here, look it up in the "Vehicles it fits" section. This listing is one regulator for the rear right door; the rear left is a separate part and is normally replaced at the same time.
Specifications
Fit and size
- Position: rear right
- Quantity per vehicle: 1
- Attachment type: bolt on
- Window operation: electric
Build and materials
- Type: regulator only, motor not included
- Gear material: plastic
- Cable material: plastic and metal
- Condition: new
- Country of origin: Taiwan
In the box
One power window regulator. The window motor and mounting hardware are not included; the old fasteners may not be reusable, so plan on new bolts.
Installation notes
- Reverse-engineered to the original equipment shape and dimensions for a direct, easy installation.
- No installation instructions come with the part.
Interchange: 9553-1061R · 82-3907A · 20-1064
11R144 · 81761 · WLR1196 · 1267301046 · WR40455
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
11R144, 81761, 9553-1061R, 82-3907A, 823907A, WLR1196, 1267301046, WR40455, 20-1064
Frequently Asked Questions
Will the Dorman 740-455 fit a 1988-1991 Mercedes-Benz 300SE?
Yes. Dorman 740-455 is the rear right window regulator for the 1988-1991 Mercedes-Benz 300SE, one per vehicle. If your car is another model, check the "Vehicles it fits" section.
Does this Dorman window regulator include the motor?
No. This listing is the regulator only. The window motor is not included, and neither are mounting hardware or installation instructions.
What is the gear on this rear right window regulator made of?
Dorman 740-455 has a plastic gear and a cable made of plastic and metal. It is a bolt-on attachment.
How can I tell a window regulator is wearing out?
A window that drops into the door, tilts in its track or grinds when the switch is pressed can mean a worn regulator. A shop can test the motor and switch.
Does Dorman 740-455 replace WR40455?
Yes. WR40455 is one of the numbers Dorman 740-455 replaces, along with 82-3907A and 20-1064.
