ACI 389552 Power Window Motor and Regulator Assembly - Front Left

Reliable Window Motor and Regulator Assembly for BMW Models

The ACI Window Assembly part number 389552 offers a durable and efficient solution for power window operation in select BMW vehicles. Designed with a hardened steel gear and built to meet or exceed OEM standards, this new window motor and regulator assembly ensures smooth express up and down functionality.

• New power window motor and regulator assembly
• Hardened steel gear for enhanced durability
• Express up and down window operation
• Meets or exceeds OEM specifications
• Compatible with multiple BMW 5 Series models

About the ACI Window Assembly Product Line

The ACI Window Assembly product line focuses on delivering complete window motor and regulator assemblies engineered for reliable performance and longevity. This line is designed to provide direct replacement parts that maintain factory functionality, making it suitable for power window repairs on BMW vehicles requiring precise fit and operation.

Product Details and Compatibility

This window motor and regulator assembly (part number 389552) is specifically compatible with BMW 5 Series models including the 528i, 528i xDrive, 535d, 535d xDrive, 535i, 535i GT, 535i GT xDrive, 535i xDrive, 550i, 550i GT, 550i GT xDrive, 550i xDrive, ActiveHybrid 5, and M5. The assembly features a hardened steel gear that enhances strength and wear resistance, ensuring reliable power window operation. It supports express up and down functionality, allowing for quick window movement with a single press of the switch. This new assembly meets or exceeds OEM quality standards, providing a dependable replacement for worn or faulty window regulators and motors.

Common Applications and Issues Resolved

• Restores power window movement in BMW 5 Series models
• Fixes slow or unresponsive window operation
• Eliminates grinding or clicking noises from worn gears
• Resolves windows stuck in the up or down position
• Replaces failed motor or regulator components

Installation Notes and Tips

Installation of the ACI window motor and regulator assembly requires removal of the door panel and disconnection of the existing window motor and regulator. Ensure the window glass is properly supported during replacement to prevent damage. Follow vehicle-specific service manual instructions for torque specifications and electrical connections. Testing the express up and down function after installation is recommended to confirm proper operation.

Quality Assurance and Warranty

This ACI window motor and regulator assembly is a new part that meets or exceeds OEM standards for fit, form, and function. The hardened steel gear construction contributes to long-lasting durability. While specific warranty details are not provided, ACI products typically come with manufacturer-backed quality assurance to support reliable performance in BMW 5 Series vehicles.