Dorman 740-398 Window Regulator - Front Left

Reliable Manual Window Regulator for Chevrolet and Pontiac Models

The Dorman 740-398 manual window regulator is designed to restore smooth window operation in select Chevrolet and Pontiac vehicles. Engineered with durable materials, this bolt-on regulator offers a straightforward replacement solution for manual window systems.

• Compatible with Chevrolet Cobalt, Pontiac G4, G5, and Pursuit models
• Manual window operation type without motor included
• Durable metal and plastic frame construction
• Plastic gear material for consistent performance
• Bolt-on attachment type for secure installation
• Package includes one manual window regulator

Product Details and Construction

The Dorman 740-398 window regulator features a combination of metal and plastic frame materials, providing a balance of strength and lightweight design. The plastic gear material ensures smooth manual operation without excessive wear. This part is designed for vehicles that use manual window systems, meaning it does not include a motor or wiring. The bolt-on attachment type allows for a secure fit using existing mounting points, although mounting hardware is not included. Installation instructions are not provided, so professional installation or prior experience is recommended.

Compatible Vehicles and Applications

This manual window regulator is compatible with the following vehicles:

• Chevrolet Cobalt
• Pontiac G4
• Pontiac G5
• Pontiac Pursuit

It is intended for use in manual window systems where the original regulator has failed or is malfunctioning.

Common Issues Addressed by This Window Regulator

• Window glass that does not move up or down smoothly
• Manual window crank resistance or jamming
• Broken or worn window regulator gears
• Loose or unstable window glass movement
• Failure of the original manual window regulator mechanism

Installation Notes and Tips

Installation of the Dorman 740-398 window regulator requires removal of the door panel and careful handling of the window glass. Since mounting hardware and installation instructions are not included, ensure you have the necessary tools and hardware before beginning. Verify compatibility with your Chevrolet Cobalt or Pontiac G4, G5, or Pursuit model year and door configuration. Professional installation is recommended if you are unfamiliar with manual window regulator replacement.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. While specific warranty details for part number 740-398 are not provided here, Dorman typically offers limited warranties covering defects in material and workmanship. For exact warranty information, consult the product packaging or Dorman's official resources.