Dorman 740-509 Window Regulator - Front Left

Reliable Window Regulator for Lexus Land Cruiser and Toyota LX470

The Dorman 740-509 window regulator is designed to restore smooth electric window operation for select Lexus and Toyota models. Engineered with durable materials, this part ensures consistent performance for your Land Cruiser or LX470.

Key Features of Dorman 740-509 Window Regulator

• Gear material constructed from plastic for reliable movement
• Metal and plastic frame components for balanced strength and flexibility
• Bolt-on attachment type for secure installation
• Electric window operation compatible, motor not included
• Includes one power regulator unit per package

Detailed Product Description

The Dorman 740-509 window regulator is specifically designed for electric window systems in Lexus Land Cruiser and Toyota LX470 vehicles. Its plastic gear material reduces noise and wear, while the combination of metal and plastic in the frame provides structural integrity without excessive weight. This regulator is a bolt-on type, allowing for straightforward replacement without modification. Note that the motor is not included, so this part is ideal for users who need to replace the regulator mechanism itself. Installation instructions and mounting hardware are not included, so 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 complete loss of electric window function
• Grinding or unusual noises during window operation
• Window glass becoming stuck or misaligned
• Wear or damage to the internal regulator mechanism

Installation Notes and Tips

• Compatible with Lexus Land Cruiser and Toyota LX470 models; verify vehicle year and door side before installation
• Requires bolt-on mounting; ensure proper alignment to avoid window binding
• Motor not included—retain existing motor or purchase separately if needed
• Professional installation recommended if unfamiliar with door panel removal and window regulator replacement
• Check electrical connections and window tracks during installation for optimal performance

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 740-509 window regulator undergoes quality checks to ensure durability and reliable operation. Warranty coverage details vary by distributor, so consult your point of purchase for specific warranty terms related to this part.