Dorman 749-004 Window Regulator - Rear Left

Reliable Window Regulator for Mercedes-Benz Models

The Dorman 749-004 window regulator is designed to restore smooth electric window operation in select Mercedes-Benz vehicles. Engineered with durable materials, this power window regulator offers a bolt-on attachment for straightforward replacement.

Key Features of Dorman 749-004 Window Regulator

• Compatible with Mercedes-Benz S55 AMG, S65 AMG, S350, S430, S500, and S600 models
• Electric window operation type for seamless power window control
• Durable metal and plastic frame construction for strength and longevity
• Plastic gear material designed for reliable performance
• Bolt-on attachment type for direct fit installation
• Includes one power regulator unit (motor not included)

Detailed Product Description

The Dorman 749-004 window regulator is a replacement part specifically engineered for Mercedes-Benz luxury sedans and AMG performance models. Its frame combines metal and plastic components to balance durability with weight considerations. The plastic gear mechanism ensures smooth engagement with the window motor, although the motor itself is not included with this part. Designed for electric window systems, this regulator uses a bolt-on attachment method, allowing for a secure and precise fit without modification. This part is ideal for restoring proper window function in vehicles where the original regulator has failed or worn out.

Common Issues Addressed by This Window Regulator

• Window glass failing to move up or down smoothly
• Intermittent or complete loss of power window operation
• Grinding or clicking noises during window movement
• Window glass becoming stuck in one position
• Worn or broken gear components within the regulator assembly

Installation Notes and Tips

Installation of the Dorman 749-004 window regulator requires removal of the door panel and disconnection of the existing regulator assembly. Since mounting hardware is not included, retain original bolts or source compatible fasteners. This part does not include the motor, so ensure the existing motor is functional or replace it separately. Professional installation is recommended to avoid damage to door components and ensure proper alignment of the regulator and window glass.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. While specific warranty details for part number 749-004 are not provided here, Dorman typically offers limited warranties covering defects in materials and workmanship. Verify warranty terms with the supplier or manufacturer prior to installation.