Dorman 740-658 Window Regulator - Front Right

Reliable Window Regulator for Buick, Oldsmobile, and Pontiac

The Dorman 740-658 window regulator is designed for electric window operation in select Buick, Oldsmobile, and Pontiac models. This power window regulator offers a bolt-on attachment type and is engineered to meet the specific needs of vehicles like the Buick Achieva, Oldsmobile Cutlass, and Pontiac Grand Am.

Key Features of the Dorman 740-658 Window Regulator

• Gear material constructed from durable plastic for smooth operation
• Bolt-on attachment type for secure and straightforward installation
• Frame made from a combination of metal and plastic for strength and flexibility
• Electric window operation compatible with factory power window systems
• Includes one power regulator unit without motor or mounting hardware

Detailed Product Description

The Dorman 740-658 window regulator is a replacement part designed specifically for electric window systems in Buick Achieva, Oldsmobile, and Pontiac Grand Am and Skylark models. Its plastic gear material ensures quiet and efficient movement, while the mixed metal and plastic frame provides a balance of durability and weight reduction. This regulator is a bolt-on type, allowing for a secure fit without the need for additional modifications. Note that this unit does not include a motor or mounting hardware, so it is intended for use with existing components or separate motor replacement.

Common Applications and Issues Addressed

• Restores smooth electric window operation in Buick Achieva and Pontiac Grand Am vehicles
• Replaces worn or broken window regulators causing window misalignment or failure
• Solves issues with window sticking or slow movement in Oldsmobile Skylark models
• Addresses rattling or loose window mechanisms due to damaged regulator gears
• Provides a reliable replacement for plastic gear wear in power window assemblies

Installation Notes and Tips

Installation of the Dorman 740-658 window regulator requires removal of the door panel and existing regulator assembly. Since mounting hardware and motor are not included, ensure compatibility with your vehicle’s existing components before installation. The bolt-on attachment type simplifies the mounting process, but professional installation is recommended for proper alignment and operation. Refer to vehicle-specific repair manuals for detailed instructions.

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 with quality plastic gears and a durable frame to provide reliable service. Warranty coverage details can be obtained from the product packaging or Dorman’s official resources.