Cadillac Deville Front Passenger Side Power Window Regulator TRQ

Frequently bought together

Vehicle Fit
Warranty & Shipping

Part Details

  • Regulator Option:   without Motor
  • Operation:   Power


  • RH (Passengers Side) FRONT
  • Does NOT include power window motor
  • Regulator cannot be purchased separately from the dealer
  • 100% mechanically tested prior to leaving the factory

Please Note:

This window regulator is designed to work with factory style motors only.  Due to variations in aftermarket designs, replacement motors may not have the correct gear style.

Please Note:

This window regulator is a high quality aftermarket part that meets or exceeds the performance of the original. It has been subjected to extensive testing and quality control standards. That is why we offer this regulator with our superior warranty!

Rigorously Tested

Build to strict quality standards

Highest Quality Materials

Made from the highest quality materials for extreme durability and premium performance.

Item Condition: New

Attention California Customers:

WARNING:  This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer, and birth defects or other reproductive harm.  For more information, go to

Lifetime Warranty

This item is backed by our limited lifetime warranty. In the event this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.

Customer Q&A
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Fits the following Makes:

Year Make Model Description
2000-2003Cadillac Deville Cadillac Deville Front Passenger Side Power Window Regulator
2004-2005Cadillac Deville Cadillac Deville (excluding Armored Option) Front Passenger Side Power Window Regulator

Part Interchange

Brand Label Part Number
Dorman 740-521

This item may be interchangeable with parts from other brands with the above part numbers. This information is provided only for reference and does not guarantee that the item you are purchasing is identical to parts with part numbers from the brands listed above. To confirm that this item fits your vehicle, use the above "Check Vehicle Fit" option.

Product Reviews
4.44/ 5.0
9 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Perfect fit
I got the item very quickly. The part fit exactly. It works like its supposed to. I am very happy with this purchase. I would highly recommend 1aauto to all my friends.
January 26, 2017
Excellent parts none better
Excellent parts and prices. You cant find any better and service and delivery is ??.
February 14, 2017
Great part.
Good, quality part. Only problem I had is that I couldnt order a front, passenger regulator with the motor. Had to transfer motors. When i ordered the back passenger, I had an option to buy with or without motor. I just wanted to keep an extra motor just in case it went out soon. Other than that, 10 mm wrench, about 30 mins and its a wrap!
July 15, 2017
Works Great
Easy to install. High quality. Works great. Great price.
November 23, 2017
Fast Delivery
Fast delivery and no issues with installation or performance of the part.
November 30, 2017
Never Dissapointed
Fast Shipping Good Parts Fair Prices. Been Buying Parts Here For Years. Never Dissapointed. Five Star Company For Sure.
March 6, 2018
I needed a replacement door regulator for a 2002 cadillac
I have changed those on pickups and on standard sized buick vehicles before, however looking at the extensive process to change them on a Cadillac was more than I was ready for. I purchased a replacement regulator at a very fair price. The video to install it for free was a gift to no end to me and I thank 1A Auto for providing prompt delivery and how to do it totally. Steve Olienyk
April 25, 2019
September 1, 2019
Perfect as always
It’s always easy with 1 A auto, really appreciate the way they list the parts and always there to offer suggestions. It came exactly when they said it would. Dependable and reasonable. I will always be using them for my parts !
December 15, 2019
Part 1AWRG00525
In Stock

Orders must be placed by 2pm ET
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Estimated Arrival Cost

Deliveries made to PO Boxes and FPO may take longer. See our Shipping & Delivery for more information.

Brand #: WRA51407