Dorman 740-521 Window Regulator - Front Right

Reliable Window Regulator for Cadillac DeVille

The Dorman 740-521 window regulator is designed specifically for Cadillac DeVille models, providing dependable electric window operation. This power regulator offers a bolt-on attachment type and is engineered with durable materials to ensure consistent performance.

• Compatible with Cadillac DeVille vehicles
• Electric window operation type
• Bolt-on attachment for straightforward installation
• Plastic gear material for smooth movement
• Metal and plastic frame construction for durability
• Does not include motor or mounting hardware
• Package contains one power regulator unit

Product Details and Specifications

The Dorman 740-521 window regulator features a combination of plastic gears and a metal/plastic frame to balance durability and smooth operation. Designed for electric window systems, this regulator does not include a motor, making it suitable for replacing the regulator mechanism only. The bolt-on attachment type allows for a secure fit without the need for additional mounting hardware, which is not included. Installation instructions are not provided, so professional installation or prior experience is recommended.

Common Applications and Problem Resolution

This window regulator is intended for use in Cadillac DeVille models requiring replacement of the electric window regulator mechanism. It addresses several common issues, including:

• Window glass failing to move up or down smoothly
• Window becoming stuck in one position
• Grinding or unusual noises during window operation
• Loose or unstable window movement
• Regulator mechanism wear or damage

Installation Notes and Tips

Installation of the Dorman 740-521 window regulator requires removal of the door panel and careful handling of the window glass. Since mounting hardware and motor are not included, ensure existing components are in good condition or replaced as needed. The bolt-on attachment type simplifies securing the regulator to the door frame. Professional installation is recommended if you are unfamiliar with electric window systems.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. While this product does not include a motor or mounting hardware, it is built with quality plastic gears and a metal/plastic frame to provide reliable service. Warranty information is available through Dorman and typically covers defects in materials and workmanship under normal use.