/live/media/WR/WR_81520_Fro.jpg)
OE Quality
60-Day Returns
ACI 81520 Window Regulator - Front Left
Reliable Power Window Regulator for BMW Front Left Door
The ACI Window Regulator part number 81520 is designed specifically for the front left door of select BMW models. This power window regulator ensures smooth and consistent window operation, meeting or exceeding OEM standards for quality and fitment.
- Compatible with BMW 525i, 528i, 530i, 540i, and M5 models
- Front left mounting position
- Power window operation type
- New, not remanufactured
- Mounting hardware and motor not included
- Meets or exceeds OEM specifications
About the ACI Window Regulator Product Line
The ACI Window Regulator line focuses on delivering reliable window control components that align with original equipment manufacturer requirements. This product line offers new window regulators engineered for precise fit and function, providing a direct replacement solution for power window systems in various vehicle makes and models, including BMW.
Product Details and Features
The ACI Window Regulator 81520 is a power window regulator designed for the front left door of BMW 525i, 528i, 530i, 540i, and M5 vehicles. It is a new part that meets or exceeds OEM quality standards, ensuring dependable performance and durability. Please note that this part does not include the motor or mounting hardware, so those components must be sourced separately if needed. The regulator facilitates smooth window movement and is engineered to fit precisely in the specified BMW models, maintaining factory-level operation.
Common Issues Addressed by This Window Regulator
- Window stuck in the up or down position
- Intermittent or slow window movement
- Grinding or unusual noises during window operation
- Window falling inside the door panel
- Failure of the window to respond to power controls
Installation Notes and Tips
- Ensure compatibility with BMW 525i, 528i, 530i, 540i, and M5 front left door before installation
- Mounting hardware and motor are not included; verify availability before starting installation
- Follow vehicle-specific service manual instructions for removal and installation
- Test window operation after installation to confirm proper function
Quality Assurance and Warranty
This ACI Window Regulator 81520 is a new part that meets or exceeds OEM standards, providing reliable performance for your BMW vehicle. While mounting hardware and motor are not included, the regulator itself is manufactured to strict quality controls. Please consult the product documentation or supplier for specific warranty details.
| Brand | Four Seasons |
|---|---|
| Part Number | 37865 |
| Position | Window Regulator |
| Connector Gender | Female |
| Connector Shape | Rectangular |
| Description | Coolant Temp Sensor |
| Fitting Thread Size | No Threads/Clip In |
| Meets / Exceeds OEM? | YES |
| Number of Terminals | 2 |
| Style | Coolant Temp Sensor |
| Type | Coolant Temp Sensor |
This part fits 19 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2003 | BMW | 525i | Front Left | Window regulator suitable for vehicle's proper fit and function.; Window Regulator |
| 2003 | BMW | 530i | Front Left | Window regulator suitable for vehicle's proper fit and function.; Window Regulator |
| 2003 | BMW | 540i | Front Left | Window regulator suitable for vehicle's proper fit and function.; Window Regulator |
| 2003 | BMW | M5 | Front Left | Window regulator suitable for vehicle's proper fit and function.; Window Regulator |
| 2002 | BMW | 525i | Front Left | Window regulator suitable for vehicle's proper fit and function.; Window Regulator |
| 2002 | BMW | 530i | Front Left | Window regulator suitable for vehicle's proper fit and function.; Window Regulator |
| 2002 | BMW | 540i | Front Left | Window regulator suitable for vehicle's proper fit and function.; Window Regulator |
| 2002 | BMW | M5 | Front Left | Window regulator suitable for vehicle's proper fit and function.; Window Regulator |
| 2001 | BMW | 525i | Front Left | Window regulator suitable for vehicle's proper fit and function.; Window Regulator |
| 2001 | BMW | 530i | Front Left | Window regulator suitable for vehicle's proper fit and function.; Window Regulator |
| 2001 | BMW | 540i | Front Left | Window regulator suitable for vehicle's proper fit and function.; Window Regulator |
| 2001 | BMW | M5 | Front Left | Window regulator suitable for vehicle's proper fit and function.; Window Regulator |
| 2000 | BMW | 528i | Front Left | Window regulator suitable for vehicle's proper fit and function.; Window Regulator |
| 2000 | BMW | 540i | Front Left | Window regulator suitable for vehicle's proper fit and function.; Window Regulator |
| 2000 | BMW | M5 | Front Left | Window regulator suitable for vehicle's proper fit and function.; Window Regulator |
| 1999 | BMW | 528i | Front Left | Window regulator suitable for vehicle's proper fit and function.; Window Regulator |
| 1999 | BMW | 540i | Front Left | Window regulator suitable for vehicle's proper fit and function.; Window Regulator |
| 1998 | BMW | 540i | Front Left | Window regulator suitable for vehicle's proper fit and function.; Window Regulator |
| 1997 | BMW | 540i | Front Left | Window regulator suitable for vehicle's proper fit and function.; Window Regulator |
* 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.