Dorman 740-178 Window Regulator - Front Left

Overview of Dorman 740-178 Window Regulator for Ford and Lincoln

The Dorman 740-178 window regulator is designed specifically for the front left door of Ford Expedition and Lincoln Navigator models. This electric window regulator offers reliable operation with a durable plastic gear and housing, ensuring smooth window movement without the motor included.

• Compatible with Ford Expedition and Lincoln Navigator front left doors
• Electric window operation type without motor included
• Durable plastic gear and housing materials
• Metal and plastic frame construction for strength and flexibility
• Bolt-on attachment type for secure mounting
• Mounting hardware not included

Detailed Product Description

The Dorman 740-178 window regulator is engineered to replace the front left window regulator in select Ford Expedition and Lincoln Navigator vehicles. Featuring a plastic gear and housing, this part balances durability with lightweight design. The frame combines metal and plastic materials to provide structural integrity while accommodating the electric window operation system. This regulator is designed for bolt-on installation, ensuring a secure fit without the need for additional mounting hardware, which is not included. Note that the motor is not part of this assembly, so it is ideal for users who only require the regulator component.

Common Applications and Problem Solving

• Resolves window sticking or failure to move up and down
• Replaces broken or worn plastic gears causing window misalignment
• Addresses rattling or loose window movement in the front left door
• Fixes issues related to damaged or bent regulator frames
• Restores electric window functionality without replacing the motor

Installation Notes and Tips

Installation of the Dorman 740-178 window regulator requires removal of the door panel and careful handling of the window glass. Since mounting hardware and installation instructions are not included, it is recommended to use existing bolts and consult a repair manual specific to Ford Expedition or Lincoln Navigator models. Proper alignment of the regulator frame is critical to ensure smooth window operation. Professional installation is advised if unfamiliar with door panel disassembly or window regulator replacement.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 740-178 window regulator undergoes quality checks to ensure durability and reliable performance in Ford Expedition and Lincoln Navigator vehicles. While specific warranty details are not provided here, Dorman typically offers limited warranties on their replacement parts. Verify warranty coverage with the product documentation or supplier at the time of purchase.