Keep the front right window glass traveling up and down on its proper path with the Dorman window regulator, part number 740-521. It is a direct-fit replacement for the 2000-2005 Cadillac DeVille and is sold as a power window regulator only.
The regulator is the mechanism inside the door that raises, lowers and supports the window glass as the power window motor drives it. Dorman designed and tested this Dorman OE Solutions window regulator to fit, work and perform like the original regulator on the listed vehicle.
- Tested in a real door: cycled thousands of times in an actual vehicle door during quality testing.
- Engineered in the USA: backed by Dorman's long history in the automotive aftermarket.
- Direct fit: reverse-engineered to follow the original equipment shape and dimensions.
- Regulator only: the window motor is not included.
A regulator may need replacing if the window moves slowly or crookedly, drops into the door, or will not move while the motor can still be heard running. Grinding or clicking from inside the door is another sign. A failed motor or switch can cause similar symptoms, so diagnose the cause before replacing parts. See the "Vehicles it fits" section for full application details.
Interchange: 1553-2000R · 82-1004A · 20-0122
15532000R · 821004A · 200122 · WR0025 · 11R300 · 81245 · RPGM080 · WLR6001 · 17801303 · 19244841 · 25714289 · 25737255 · C462941 · SK740521 · WR40521
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
WR0025, 11R300, 81245, RPGM080, 1553-2000R, 82-1004A, 821004A, WLR6001, 17801303, 19244841, 25714289, 25737255, C462941, SK740521, WR40521, 20-0122
Frequently Asked Questions
Will this work as the window regulator on a 2004 Cadillac DeVille?
Yes. The 740-521 is listed for the 2000-2005 Cadillac DeVille in the front right position, and that includes the 2004 model year.
Does this regulator come with a window motor?
No. This is a power window regulator sold as the regulator only, so the window motor is not included.
What does a window regulator do?
The regulator is the mechanism inside the door that raises, lowers and supports the window glass as the power window motor drives it.
What are signs this window regulator may be failing?
Look for a window that moves slowly or crookedly, drops into the door, or will not move while the motor still runs, and for grinding or clicking in the door. Diagnose the cause first.
How was this regulator tested?
Dorman tested it by cycling it thousands of times in an actual vehicle door. It was engineered in the USA and reverse-engineered to follow the original equipment shape and dimensions.
