Dorman 740-170 Window Regulator - Rear Left

Reliable Rear Left Window Regulator for Ford Expedition and Lincoln Navigator

The Dorman 740-170 window regulator is designed specifically for the rear left door of Ford Expedition and Lincoln Navigator models. This electric window regulator offers a durable solution for restoring smooth window operation without the need for a motor replacement.

Key Features of Dorman 740-170 Window Regulator

• Compatible with rear left door of Ford Expedition and Lincoln Navigator
• Electric window operation type for seamless control
• Durable plastic gear and housing materials
• Metal and plastic frame construction for strength and flexibility
• Bolt-on attachment type for straightforward installation
• Includes one power regulator without motor or mounting hardware

Detailed Product Description

The Dorman 740-170 window regulator is engineered to meet the specific requirements of the rear left door on Ford Expedition and Lincoln Navigator vehicles. Featuring a plastic gear and housing, this part balances lightweight design with durability. The frame combines metal and plastic components to provide structural integrity while accommodating vehicle design constraints. This regulator operates electrically but does not include a motor, allowing for replacement of the regulator mechanism alone. The bolt-on attachment type simplifies installation, although mounting hardware and installation instructions are not included.

Common Issues Addressed by This Window Regulator

• Window glass failing to move up or down smoothly in the rear left door
• Grinding or clicking noises during window operation
• Window stuck in a partially open or closed position
• Worn or broken plastic gears causing window malfunction
• Regulator frame damage affecting window alignment

Installation Notes and Tips

Installation of the Dorman 740-170 window regulator requires removal of the rear left door panel. Since mounting hardware and installation instructions are not included, it is recommended to retain original bolts and fasteners or acquire compatible hardware separately. Care should be taken to align the regulator frame properly to ensure smooth window movement. 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 740-170 window regulator is constructed with quality plastic and metal materials to provide reliable performance. 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.