Dorman 740-638 Window Regulator - Front Right

Reliable Window Regulator for Buick and Oldsmobile Models

The Dorman 740-638 window regulator is designed to restore smooth electric window operation in select Buick and Oldsmobile vehicles. Engineered with durable materials, this power window regulator offers a bolt-on installation solution for Century, Intrigue, and Regal models.

Key Features of Dorman 740-638 Window Regulator

• Gear material constructed from plastic for consistent performance
• Frame made of a combination of metal and plastic for strength and durability
• Bolt-on attachment type ensures secure mounting
• Electric window operation compatible with factory systems
• Includes one power regulator unit per package
• No motor or mounting hardware included
• Installation instructions not included

Detailed Product Description

The Dorman 740-638 window regulator is specifically designed for electric window systems in Buick Century, Oldsmobile Intrigue, and Buick Regal vehicles. Its plastic gear material provides reliable movement while the mixed metal and plastic frame offers a balance of rigidity and weight savings. This part is a bolt-on replacement, allowing for straightforward installation without modification. Note that the motor is not included, so this regulator is intended for use with existing or separately purchased motors. The absence of mounting hardware and installation instructions means professional installation or prior experience is recommended.

Common Issues Addressed by This Window Regulator

• Window glass failing to move up or down smoothly
• Intermittent or non-functioning electric window operation
• Grinding or clicking noises during window movement
• Window glass becoming stuck or falling inside the door panel
• Worn or broken regulator gears causing window misalignment

Installation Notes and Tips

• Compatible with factory electric window motors; motor not included
• Requires bolt-on mounting; verify bolt locations before installation
• Professional installation recommended due to lack of included instructions
• Inspect door panel and wiring before installation to ensure proper fit
• Test window operation after installation to confirm correct function

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 740-638 window regulator undergoes quality checks to ensure durability and reliable operation in Buick Century, Oldsmobile Intrigue, and Buick Regal vehicles. Warranty coverage details should be confirmed at the time of purchase, as they may vary by distributor.