Dorman 740-408 Window Regulator - Front Left

Reliable Window Regulator for Mercedes-Benz Models

The Dorman 740-408 window regulator is designed for electric window operation in select Mercedes-Benz vehicles. Engineered with durable materials, this part ensures smooth and consistent window movement for your C36 AMG, C43 AMG, C220, C230, and C280 models.

• Gear material constructed from plastic for precise engagement
• Bolt-on attachment type for secure mounting
• Metal and plastic frame components for balanced strength and flexibility
• Electric window operation compatible, motor not included
• Package includes one power regulator unit

Product Details and Specifications

The Dorman 740-408 window regulator features a combination of plastic gears and a mixed metal-plastic frame to provide reliable window control without the need for a motor, which is sold separately. This bolt-on design allows for straightforward installation on compatible Mercedes-Benz vehicles. The regulator is designed specifically for electric window systems, ensuring compatibility with factory wiring and controls. While mounting hardware and installation instructions are not included, the part’s design aligns with OEM specifications for a direct replacement.

Compatible Mercedes-Benz Models

• Mercedes-Benz C36 AMG
• Mercedes-Benz C43 AMG
• Mercedes-Benz C220
• Mercedes-Benz C230
• Mercedes-Benz C280

Common Issues Addressed by This Window Regulator

• Window glass failing to move up or down smoothly
• Intermittent or non-functioning electric window operation
• Grinding or clicking noises during window movement
• Window stuck in a partially open or closed position
• Worn or broken window regulator components causing window misalignment

Installation Notes and Tips

Installation 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. Follow vehicle-specific repair manuals for detailed procedures. Proper alignment during installation is critical to avoid premature wear or window binding.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 740-408 window regulator undergoes quality checks to ensure durability and reliable performance. Warranty coverage details can be obtained from the product packaging or official Dorman documentation.