OE Quality
60-Day Returns

Vaico V20-8705 Window Regulator - Front Left or Left
Overview of the VAICO Window Regulator V20-8705
The VAICO V20-8705 window regulator is designed for precise and reliable operation in select BMW models. This electric window regulator is engineered to meet the specific requirements of the BMW 1 Series M, 128i, and 135i, ensuring smooth window movement and durability.
- Electric operating mode for seamless window control
- Dimensions: 631 mm length, 434 mm width, 65 mm height
- Weight: 1.446 kg for balanced installation
- Compatible with BMW 1 Series M, 128i, and 135i models
- Part number V20-8705 for accurate identification
- Supplied without electric motor, designed for integration with existing components
VAICO Brand Line and Product Quality
The VAICO brand line specializes in high-quality automotive replacement parts, focusing on precision and fitment for European vehicles. The VAICO window regulator V20-8705 reflects the brand's commitment to delivering components that meet OEM specifications, providing reliable performance for BMW vehicles. This part is engineered to integrate seamlessly with the vehicle’s existing systems, maintaining factory standards.
Detailed Product Description
This window regulator features an electric operating mode, allowing for smooth and controlled window movement in the BMW 1 Series M, 128i, and 135i. With a length of 631 mm, width of 434 mm, and height of 65 mm, it fits precisely within the door assembly. The unit weighs 1.446 kg, balancing durability and ease of installation. Note that this part is supplied without the electric motor, making it suitable for replacement scenarios where the motor remains functional or is replaced separately. The paired article number V20-8704 may be relevant for complementary parts.
Common Applications and Problem Resolution
- Restores smooth window operation in BMW 1 Series M, 128i, and 135i
- Replaces faulty or damaged window regulators causing window jamming or slow movement
- Addresses issues with uneven window travel or misalignment
- Supports repair of electric window systems without replacing the motor
- Improves door functionality and user convenience
Installation Notes and Tips
Installation of the VAICO V20-8705 window regulator requires removal of the door panel and careful handling of the window glass. Since this part does not include the electric motor, ensure compatibility with the existing motor or plan for a separate motor replacement. Verify the regulator’s dimensions against the vehicle’s door assembly to confirm fitment. Professional installation is recommended to maintain proper alignment and electrical connections.
Quality Assurance and Warranty
VAICO parts are manufactured to meet stringent quality standards, ensuring durability and reliable performance. The V20-8705 window regulator undergoes rigorous testing to comply with OEM specifications for BMW vehicles. Warranty coverage details should be confirmed at the point of purchase, reflecting VAICO’s commitment to product reliability and customer satisfaction.
| Brand | Vaico |
| Part Number | V20-8705 |
| Position | VAICO, Front Left |
| Height [mm] | 65 |
| Length [mm] | 631 |
| Operating Mode | Electric |
| Packaging height [cm] | 59,7 |
| Packaging width [cm] | 53,5 |
| Paired article numbers | V20-8704 |
| Supplementary Article/Supplementary Info | without electric motor |
| Weight [kg] | 1.446 |
| Width [mm] | 434 |
This part fits 13 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2013 | BMW | 128i | Base | 3.0L | L6 | Front Left | Grade: Aftermarket; Power Operated; With OE No. 51337165595; VAICO |
| 2013 | BMW | 135i | Base | Front Left | Grade: Aftermarket; Power Operated; With OE No. 51337165595; VAICO | ||
| 2012 | BMW | 128i | Base | 3.0L | L6 | Front Left | Grade: Aftermarket; Power Operated; With OE No. 51337165595; VAICO |
| 2012 | BMW | 135i | Base | Front Left | Grade: Aftermarket; Power Operated; With OE No. 51337165595; VAICO | ||
| 2011 | BMW | 1 Series M | Base | Left | Grade: Aftermarket; Power Operated; With OE No. 51337165595; VAICO | ||
| 2011 | BMW | 128i | Base | 3.0L | L6 | Front Left | Grade: Aftermarket; Power Operated; With OE No. 51337165595; VAICO |
| 2011 | BMW | 135i | Base | Front Left | Grade: Aftermarket; Power Operated; With OE No. 51337165595; VAICO | ||
| 2010 | BMW | 128i | Base | 3.0L | L6 | Front Left | Grade: Aftermarket; Power Operated; With OE No. 51337165595; VAICO |
| 2010 | BMW | 135i | Base | Front Left | Grade: Aftermarket; Power Operated; With OE No. 51337165595; VAICO | ||
| 2009 | BMW | 128i | Base | 3.0L | L6 | Front Left | Grade: Aftermarket; Power Operated; With OE No. 51337165595; VAICO |
| 2009 | BMW | 135i | Base | Front Left | Grade: Aftermarket; Power Operated; With OE No. 51337165595; VAICO | ||
| 2008 | BMW | 128i | Base | 3.0L | L6 | Front Left | Grade: Aftermarket; Power Operated; With OE No. 51337165595; VAICO |
| 2008 | BMW | 135i | Base | Front Left | Grade: Aftermarket; Power Operated; With OE No. 51337165595; VAICO |
* 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.