OE Quality
60-Day Returns

Dorman 740-324 Window Regulator - Front Left
Overview of Dorman 740-324 Window Regulator for Lexus Models
The Dorman 740-324 window regulator is designed for electric window operation in select Lexus vehicles. This replacement part is compatible with Lexus ES300, RX330, RX350, and RX400h models, providing reliable window movement without the motor included.
- Compatible with Lexus ES300, RX330, RX350, RX400h
- Electric window operation type
- Durable metal and plastic frame construction
- Plastic gear material for smooth gear engagement
- Bolt-on attachment type for secure installation
- Includes one power regulator without motor or mounting hardware
Detailed Product Description
The Dorman 740-324 window regulator is engineered with a combination of metal and plastic frame materials to balance strength and weight. Its plastic gear material ensures smooth and quiet operation of the window mechanism. Designed specifically for electric window systems, this regulator does not include a motor, making it ideal for replacing the regulator assembly only. The bolt-on attachment type allows for a straightforward installation process, although mounting hardware and installation instructions are not included. This part is a direct replacement for the window regulator in Lexus ES300, RX330, RX350, and RX400h models, ensuring compatibility and proper fitment.
Common Applications and Issues Addressed
- Restores proper window movement in Lexus ES300 and RX series vehicles
- Replaces worn or damaged window regulators causing window misalignment
- Eliminates window sticking or failure to stay in position
- Addresses issues with electric window operation without motor failure
- Provides a solution for broken or stripped plastic gears in the regulator
Installation Notes and Tips
- Installation requires removal of the door panel and disconnection of the window motor
- Since mounting hardware and instructions are not included, retain original hardware or source separately
- Ensure proper alignment of the regulator before securing bolts to avoid window binding
- Test window operation before reassembling the door panel
Quality Assurance and Warranty
Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 740-324 window regulator undergoes quality checks to ensure durability and reliable performance in Lexus ES300, RX330, RX350, and RX400h vehicles. Warranty coverage details can be obtained from the product packaging or Dorman's official resources.
| Brand | Dorman |
| Part Number | 740-324 |
| Attachment Type | Bolt On |
| Frame Material | Metal |
| Frame Material | Plastic |
| Installation Instructions Included | No |
| Motor Included | No |
| Mounting Hardware Included | No |
| Package Contents | 1 Power Regulator |
| Thread Direction | Plastic |
| Window Operation Type | Electric |
| Wire Quantity | 0 |
This part fits 11 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2009 | Lexus | RX350 | Front Left | Fits power window regulation in various vehicle models. |
| 2008 | Lexus | RX350 | Front Left | Fits power window regulation in various vehicle models. |
| 2008 | Lexus | RX400h | Front Left | Fits power window regulation in various vehicle models. |
| 2007 | Lexus | RX350 | Front Left | Fits power window regulation in various vehicle models. |
| 2007 | Lexus | RX400h | Front Left | Fits power window regulation in various vehicle models. |
| 2006 | Lexus | RX330 | Front Left | Fits power window regulation in various vehicle models. |
| 2006 | Lexus | RX400h | Front Left | Fits power window regulation in various vehicle models. |
| 2005 | Lexus | RX330 | Front Left | Fits power window regulation in various vehicle models. |
| 2004 | Lexus | RX330 | Front Left | Fits power window regulation in various vehicle models. |
| 2003 | Lexus | ES300 | Front Left | Fits power window regulation in various vehicle models. |
| 2002 | Lexus | ES300 | Front Left | Fits power window regulation in various vehicle models. |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.