Dorman 749-637 Window Regulator - Front Left

Reliable Window Regulator for Audi A4, A4 Quattro, RS4, and S4

The Dorman 749-637 window regulator is designed to restore smooth electric window operation in select Audi models. Engineered with durable materials, this power window regulator offers a bolt-on installation solution for Audi A4, A4 Quattro, RS4, and S4 vehicles.

Key Features of the Dorman 749-637 Window Regulator

• Gear material constructed from plastic for consistent performance
• Metal and plastic frame components for balanced strength and flexibility
• Bolt-on attachment type for straightforward installation
• Electric window operation compatible with factory systems
• Includes one power regulator unit without motor or mounting hardware

Detailed Product Description

This Dorman window regulator (part number 749-637) is specifically designed for electric window systems in Audi A4, A4 Quattro, RS4, and S4 models. The regulator features a plastic gear that meshes smoothly within a frame combining metal and plastic materials, ensuring reliable window movement. The bolt-on attachment type allows for a secure fit without the need for additional modifications. Note that this unit does not include a motor or mounting hardware, so it is intended for use with existing components or as a replacement regulator assembly.

Common Issues Addressed by This Window Regulator

• Electric window failing to move up or down smoothly
• Window stuck in one position due to worn or broken regulator gears
• Unusual noises during window operation caused by faulty regulator components
• Loose or misaligned window glass movement
• Intermittent window function related to regulator wear

Installation Notes and Tips

• Designed for bolt-on installation; no welding or drilling required
• Mounting hardware is not included; reuse existing fasteners if possible
• Installation instructions are not provided; professional installation is recommended if unfamiliar with window regulator replacement
• Ensure compatibility with your specific Audi model and year before installation

Quality Assurance and Warranty Information

Dorman manufactures this window regulator to meet or exceed OEM standards for fit and function. While the product does not include a motor or mounting hardware, it is engineered for durability with plastic gears and a combined metal/plastic frame. Warranty coverage details should be confirmed at the point of purchase, as they may vary.