Dorman 740-402 Window Regulator - Front Right

Overview of Dorman 740-402 Window Regulator for BMW

The Dorman 740-402 window regulator is designed for electric window operation in select BMW models including the 318i, 318ti, 325i, 328i, and M3. This replacement part offers a bolt-on attachment type and is engineered with a combination of metal and plastic frame materials to ensure durability and proper fitment.

• Compatible with BMW 318i, 318ti, 325i, 328i, and M3 models
• Electric window operation type without motor included
• Bolt-on attachment for straightforward installation
• Durable frame constructed from metal and plastic materials
• Plastic gear material for smooth window movement
• Package includes one power regulator without mounting hardware or installation instructions

Detailed Product Description

The Dorman 740-402 window regulator is a direct replacement part designed specifically for BMW vehicles such as the 318i, 318ti, 325i, 328i, and M3. It features a plastic gear mechanism that facilitates smooth and reliable window movement. The frame combines metal and plastic components to balance strength and weight, ensuring long-lasting performance. This window regulator is intended for electric window systems and does not include a motor, making it suitable for applications where the motor remains functional or is replaced separately. The bolt-on attachment type allows for a secure fit using existing mounting points, although mounting hardware and installation instructions are not included in the package.

Common Applications and Issues Addressed

• Replacement for malfunctioning or broken window regulators in BMW 3 Series and M3 models
• Resolves issues with windows that fail to move up or down smoothly
• Addresses window alignment problems caused by worn or damaged regulator gears
• Restores proper electric window operation without replacing the motor
• Fixes rattling or loose window movement due to frame wear

Installation Notes and Tips

• Designed for bolt-on installation using existing mounting points on compatible BMW models
• Motor is not included; verify motor condition before installation or replace separately if needed
• Mounting hardware and installation instructions are not provided; professional installation is recommended if unfamiliar with window regulator replacement
• Ensure proper alignment of the regulator frame to avoid window binding or misalignment

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 740-402 window regulator undergoes quality checks to ensure reliable performance in BMW 318i, 318ti, 325i, 328i, and M3 vehicles. Warranty coverage details should be confirmed at the time of purchase, as they may vary by distributor or retailer.