ACI 389639 Power Window Motor and Regulator Assembly - Rear Right

Reliable Window Motor and Regulator Assembly for BMW Models

The ACI Window Assembly part number 389639 is a new power window motor and regulator designed specifically for select BMW vehicles. Engineered with a hardened steel gear, this assembly ensures durable and consistent window operation for your BMW 3 Series and M3 models.

• New power window motor and regulator assembly
• Hardened steel gear for enhanced durability
• Compatible with BMW 323i, 325i, 325xi, 328i, 328i xDrive, 328xi, 330i, 330xi, 335d, 335i, 335i xDrive, 335xi, and M3
• Part number 389639 for precise fitment
• Does not support express up or down function

About the ACI Window Assembly Product Line

The ACI Window Assembly product line focuses on delivering reliable window motor and regulator assemblies that meet OEM specifications. This line is designed to provide a direct replacement solution for electrical and body components related to glass and window operation. The 389639 assembly combines motor and regulator in one unit, simplifying installation and ensuring compatibility with various BMW models.

Detailed Product Description

This window motor and regulator assembly features a hardened steel gear, which offers increased resistance to wear and tear compared to standard materials. The power-operated motor and regulator style provides smooth window movement without the express up or down feature. As a new component, part number 389639 guarantees a fresh, unused assembly that meets the performance standards required for BMW vehicles. It is engineered to fit a range of BMW 3 Series models and the M3, ensuring proper alignment and function within the vehicle's door system.

Common Issues Addressed by This Window Motor and Regulator Assembly

• Window failing to move up or down
• Intermittent or slow window operation
• Grinding or unusual noises during window movement
• Window stuck in one position
• Non-responsive power window switch due to motor failure

Installation Notes and Tips

• Ensure vehicle compatibility with BMW 3 Series and M3 models listed
• Disconnect the battery before installation to prevent electrical shorts
• Carefully remove the door panel to access the window assembly
• Verify the orientation of the motor and regulator before securing
• Test window operation before reassembling the door panel

Quality Assurance and Warranty

The ACI Window Assembly part number 389639 is manufactured to meet strict quality standards, featuring durable components such as the hardened steel gear. This new assembly undergoes rigorous testing to ensure reliable performance and fitment. Warranty details are provided by the manufacturer and typically cover defects in materials and workmanship for a specified period.