Dorman 740-312 Window Regulator - Front Left

Reliable Manual Window Regulator for Jeep Grand Cherokee and Grand Wagoneer

The Dorman 740-312 manual window regulator is designed specifically for Jeep Grand Cherokee and Grand Wagoneer models. This bolt-on replacement part features a durable metal and plastic frame with a plastic gear, providing dependable window operation without the need for a motor.

• Compatible with Jeep Grand Cherokee and Grand Wagoneer models
• Manual window operation type, no motor included
• Bolt-on attachment for straightforward installation
• Durable metal and plastic frame construction
• Plastic gear material for smooth window movement
• Package includes one manual window regulator

Product Details and Specifications

The Dorman 740-312 window regulator is engineered to restore manual window functionality in select Jeep vehicles. Its frame combines metal and plastic components to balance strength and weight, while the plastic gear ensures consistent and quiet operation. This part does not include a motor or wiring, as it is intended for manual window systems. The bolt-on attachment type allows for a secure fit using existing mounting points, although mounting hardware and installation instructions are not included.

Common Applications and Problem Resolution

This manual window regulator is used to address issues such as:

• Window glass that does not move up or down smoothly
• Manual window crank resistance or failure
• Broken or worn window regulator gears
• Rattling or loose window glass due to regulator frame damage
• Restoring manual window operation after regulator failure

Installation Notes and Tips

Installation of the Dorman 740-312 requires removal of the door panel and careful handling of the window glass. Since mounting hardware and instructions are not included, it is recommended to retain original bolts and fasteners. The bolt-on design aligns with factory mounting points for a secure fit. Ensure the window glass is properly supported during installation to prevent damage.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 740-312 window regulator undergoes quality checks to ensure durability and reliable operation. Please refer to Dorman's official warranty policy for coverage details.