Dorman 740-478 front left window regulator for the 2001-2003 BMW 525i and other vehicles lifts and lowers the door glass on a power window. This Dorman window regulator is made for power windows and is sold as the regulator only.
- Part of the Dorman OE Solutions line of replacement window regulators
- Cycled thousands of times in an actual vehicle door for a long, trouble-free service life
- Plastic gear with a cable made of plastic and metal
- Engineered in the USA
Quick facts
- Part: Dorman 740-478 window regulator
- Fits: 2001-2003 BMW 525i and other vehicles
- Position: Front left
- Condition: New
A power window that moves slowly, stops partway or drops into the door can mean the regulator is worn. These signs alone do not prove the regulator is at fault, since a weak window motor can produce them as well. This listing is one regulator for the front left door; that side takes one, and the front right is a separate part ordered on its own. Both sides are normally replaced together.
Fits
The 2001-2003 BMW 530i and the 1997-2003 BMW 540i take it too. Its shape and dimensions are reverse-engineered from the original equipment, and it is tested for fit, function and performance on the specified vehicles. If your BMW is not named here, look it up in the "Vehicles it fits" section.
Specifications
Fit and size
- Position: Front left
- Quantity per vehicle: 1
- Window operation type: Electric
- Attachment type: Bolt on
Build and materials
- Gear material: Plastic
- Cable material: Plastic and metal
- Condition: New
- Country of origin: China
In the box
One power window regulator. The motor, mounting hardware and installation instructions are not included, and the old fasteners may not be reusable, so plan on new bolts.
Interchange: 20-0057
11R465 · 81520 · RPB019 · 51338252393 · 822134A · WLR3025 · B462922 · SK740478 · WL44231 · WR40072
This part cross-references / interchanges with the following part numbers:
11R465, 81520, RPB019, 51338252393, 822134A, WLR3025, B462922, SK740478, WL44231, WR40072, 20-0057
Frequently Asked Questions
Is Dorman 740-478 a BMW 525i window regulator that fits the 2001-2003 model?
Yes. Dorman 740-478 is the front left window regulator for the 2001-2003 BMW 525i. Owners of other BMWs can find their car in the "Vehicles it fits" section.
Is Dorman 740-478 a 540i window regulator for the 1997-2003 BMW 540i?
Yes. Dorman 740-478 is the front left window regulator for the 1997-2003 BMW 540i. The other side of the car takes its own regulator, ordered separately.
Does the Dorman 740-478 window regulator come with the window motor?
No. The box holds one power window regulator only. The motor, mounting hardware and installation instructions are not included.
Is the gear on this front left window regulator plastic or metal?
The gear is plastic. The cable is made of plastic and metal.
How was this Dorman OE Solutions window regulator tested?
It was cycled thousands of times in an actual vehicle door, a test meant to give it a long, trouble-free service life.
