Dorman 740-405 Window Regulator - Front Right

Reliable Window Regulator for Mercedes-Benz ML Series

The Dorman 740-405 window regulator is designed for electric window operation in select Mercedes-Benz ML models. Engineered with durable materials, this part ensures smooth and consistent window movement for your vehicle.

Key Features of Dorman 740-405 Window Regulator

• Gear material constructed from plastic for lightweight and efficient operation
• Bolt-on attachment type for straightforward installation
• Metal and plastic frame materials providing a balance of strength and flexibility
• Electric window operation compatible with factory power systems
• Includes one power regulator unit without motor or mounting hardware

Detailed Product Description

The Dorman 740-405 window regulator is specifically designed to fit Mercedes-Benz ML55 AMG, ML320, ML350, ML430, and ML500 models. This electric window regulator features a plastic gear mechanism that reduces noise and wear during operation. The frame combines metal and plastic components to maintain structural integrity while minimizing weight. This part is a bolt-on replacement, allowing for a secure fit without modifications. Note that the motor and mounting hardware are not included, so these components must be reused or purchased separately.

Common Issues Addressed by This Window Regulator

• Window glass failing to move up or down smoothly
• Intermittent or complete loss of electric window function
• Grinding or clicking noises during window operation
• Window becoming stuck in one position
• Worn or damaged regulator gears causing window misalignment

Installation Notes and Tips

• Ensure compatibility with your Mercedes-Benz ML model before installation
• Retain the original motor and mounting hardware as they are not included
• Follow vehicle-specific service manual instructions for removal and installation
• Handle the plastic gear carefully to avoid damage during installation
• Test window operation before reassembling door panels

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. While installation instructions and mounting hardware are not included with part number 740-405, the product undergoes quality checks to ensure reliable performance. Please consult Dorman’s warranty policy for coverage details.