Dorman 749-640 Window Regulator - Rear Right

Overview of Dorman Window Regulator for Audi A4 Series

The Dorman 749-640 window regulator is designed specifically for Audi A4, A4 Quattro, RS4, and S4 models. This electric window regulator offers a reliable replacement option for restoring smooth window operation in your vehicle.

• Compatible with Audi A4, A4 Quattro, RS4, and S4 models
• Electric window operation type for seamless control
• Durable metal and plastic frame construction
• Plastic gear material for consistent performance
• Bolt-on attachment type for straightforward installation
• Includes one power regulator unit

Product Features and Specifications

The Dorman 749-640 window regulator features a combination of metal and plastic frame materials, providing a balance of strength and weight reduction. The gear mechanism is made of plastic, engineered to engage smoothly with the window motor (motor not included). This part is designed for electric window operation and attaches via bolts, ensuring a secure fit within the door assembly. Note that mounting hardware and installation instructions are not included in the package.

Purpose and Common Applications

This window regulator is intended to replace faulty or worn-out regulators in select Audi models. It addresses several common issues, including:

• Window glass that fails to move up or down
• Intermittent or non-responsive electric window operation
• Grinding or unusual noises during window movement
• Loose or unstable window glass within the door frame
• Broken or stripped gears affecting window control

Installation Notes and Tips

Installation of the Dorman 749-640 window regulator requires removal of the door panel and disconnection of the existing regulator. Since mounting hardware and motor are not included, reuse of original components is necessary. The bolt-on attachment type simplifies securing the regulator to the door frame. Professional installation is recommended if you are unfamiliar with door panel disassembly or window regulator replacement.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. While this window regulator does not include a motor or mounting hardware, it is engineered for durability and reliable operation. Please consult Dorman’s warranty policy for specific coverage details related to part number 749-640.