Dorman 740-140 Window Regulator - Front Left

Reliable Electric Window Regulator for Ford, Lincoln, and Mercury

The Dorman 740-140 window regulator is designed for electric window operation in select Ford, Lincoln, and Mercury vehicles. This power window regulator offers a bolt-on attachment type and is engineered to meet the specific needs of models like the Ford Fusion, Lincoln MKZ, Mercury Milan, and Zephyr.

Key Features of the Dorman 740-140 Window Regulator

• Gear material constructed from durable plastic for smooth operation
• Bolt-on attachment type for straightforward installation
• Plastic housing material designed for lightweight durability
• Metal and plastic frame materials providing structural support
• Electric window operation compatible with factory power systems
• Includes one power regulator unit per package
• Does not include motor or mounting hardware
• No installation instructions included

Detailed Description of the Dorman 740-140 Window Regulator

This Dorman window regulator (part number 740-140) is engineered to replace the electric window regulator in Ford Fusion, Lincoln MKZ, Mercury Milan, and Zephyr models. The regulator features a plastic gear and housing, which reduces weight while maintaining reliable function. The frame combines metal and plastic components to ensure proper alignment and durability during window operation. Designed as a bolt-on replacement, this part integrates with existing vehicle mounting points without modification. Note that the motor and mounting hardware are not included, so the existing components must be reused or replaced 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 broken regulator gears causing window misalignment

Installation Notes and Tips

• Ensure the existing motor and mounting hardware are in good condition before installation
• Use proper tools to remove the door panel carefully to avoid damage
• Align the regulator frame correctly to prevent window binding
• Test window operation before reassembling the door panel
• Consult vehicle-specific repair manuals for detailed installation procedures

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. While this window regulator does not include a motor or mounting hardware, it is built to provide reliable electric window operation for compatible Ford, Lincoln, and Mercury models. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.