Dorman 748-740 Power Window Motor and Regulator Assembly - Rear Left

Reliable Window Motor and Regulator Assembly for BMW 3 Series

The Dorman 748-740 window motor and regulator assembly is designed specifically for BMW 318i, 325i, and 328i models. This direct replacement part ensures smooth operation of your vehicle's power windows by combining a motor and regulator in one unit.

• Gear material constructed from durable plastic for consistent performance
• Attachment type uses bolts for secure mounting
• Includes regulator with the motor assembly for complete functionality
• Package contains one regulator and motor assembly
• Does not include mounting hardware or installation instructions
• Micro-controlled embedded logic is not included

Product Details and Specifications

The Dorman 748-740 window motor and regulator assembly features a plastic gear material that balances durability and smooth operation. The bolt attachment type allows for a secure and stable installation in your BMW 318i, 325i, or 328i. This assembly includes the regulator, eliminating the need to purchase separate components. While mounting hardware and installation instructions are not included, the design is compatible with factory mounting points, making it suitable for professional installation. The absence of micro-controlled embedded logic means this part operates with standard electrical control systems found in these BMW models.

Compatible BMW Models and Common Applications

This window motor and regulator assembly is compatible with the following BMW models:

• BMW 318i
• BMW 325i
• BMW 328i

It is intended to replace faulty or worn window motor and regulator units that cause issues such as:

• Power window failing to move up or down
• Intermittent window operation or slow movement
• Grinding or unusual noises during window operation
• Window stuck in one position
• Loose or unstable window glass movement

Installation Notes and Tips

Installation of the Dorman 748-740 window motor and regulator assembly requires removal of the door panel and disconnection of the existing motor and regulator. Since mounting hardware and installation instructions are not included, it is recommended to have professional installation or refer to a service manual specific to BMW 318i, 325i, or 328i models. Ensure all electrical connections are secure and test window operation before reassembling the door panel.

Quality Assurance and Warranty Information

Dorman parts are manufactured to meet or exceed OEM standards for fit and function. The 748-740 window motor and regulator assembly undergoes quality checks to ensure reliable performance. While specific warranty details are not provided here, Dorman typically offers limited warranties on their replacement parts. Verify warranty coverage with the product documentation or supplier at the time of purchase.