Dorman 749-990 Window Regulator - Front Left

Reliable Window Regulator for Mercedes-Benz Models

The Dorman 749-990 window regulator is designed to restore smooth electric window operation in select Mercedes-Benz vehicles. Engineered with durable materials, this part ensures consistent performance for your C32 AMG, C55 AMG, C230, C240, C280, C320, and C350 models.

• Compatible with Mercedes-Benz C32 AMG, C55 AMG, C230, C240, C280, C320, and C350
• Electric window operation type for seamless power window control
• Durable metal and plastic frame construction
• Plastic gear material for reliable movement
• Bolt-on attachment type for secure installation
• Includes one power regulator unit
• No motor or mounting hardware included

Durable Construction and Design Features

The Dorman 749-990 window regulator features a combination of metal and plastic frame materials that provide strength while maintaining lightweight properties. The plastic gear material is engineered to engage smoothly with the window mechanism, reducing wear and noise during operation. This regulator is designed for electric window systems and does not include a motor, allowing compatibility with existing vehicle components. The bolt-on attachment type simplifies installation by securely fastening the regulator to the door frame without the need for additional mounting hardware.

Compatible Mercedes-Benz Models and Applications

This window regulator is specifically compatible with a range of Mercedes-Benz models, including the C32 AMG, C55 AMG, C230, C240, C280, C320, and C350. It is ideal for owners seeking a replacement part that matches the original equipment specifications for electric window operation. The part number 749-990 ensures you receive the correct component designed for these vehicles.

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 damaged regulator components
• Loose or unstable window glass movement
• Non-responsive power window controls related to regulator failure

Installation Notes and Tips

Installation of the Dorman 749-990 window regulator requires removal of the door panel and careful handling of the window glass. Since mounting hardware and motor are not included, reuse existing components or source separately if needed. The bolt-on attachment type facilitates a secure fit, but ensure all bolts are tightened to manufacturer specifications. Professional installation is recommended for optimal results and to avoid damage to door components.

Quality Assurance and Warranty Information

Dorman manufactures this window regulator to meet or exceed OEM standards for fit and function. While installation instructions are not included, the part is engineered for durability and reliable performance. Please consult Dorman’s warranty policy for specific coverage details related to the 749-990 window regulator.