BMW 3 Series E46 Interior Mirror EC LED Radio 8257729

The BMW 3 Series E46 interior rearview mirror with automatic dimming (EC) and LED lighting is an original interior feature, designed specifically with driver ergonomics and comfort in mind. This component provides a functional solution for repairing or restoring the factory interior configuration in the BMW 3 Series E46.

Specifications and technical data

• SKU: 8257729
• Mark: BMW
• Condition: Used
• OEM Part Number: 8257729
• Substitutable numbers: 51169134449, 9134449, 51168257729, 8257729, 51168257723, 8257723, 51169123512, 9123512, 51164166482, 4166482
• Color: Black
• Category: Rear View Mirrors

Purpose and function of the BMW 3 E46 interior mirror

The BMW 3 Series E46's interior rearview mirror is a rearview mirror designed to provide a clear field of view behind the vehicle while reducing glare from other vehicles' headlights. Integrated EC (electrochromatic) technology automatically dims the mirror glass, improving nighttime driving comfort and reducing eye strain.

This element is particularly useful for:

• comprehensive interior repair after a collision or mechanical damage to the mirror,
• restoring the original cabin equipment in the BMW 3 E46,
• modernization from a simpler version of the mirror to a variant with EC function and LED lighting.

Construction, colors and integration with the interior

The mirror has a black housing, harmoniously complementing the typical headliner and center console trim in the BMW 3 Series E46. The neutral, dark shade makes it easy to match various upholstery options and equipment packages, maintaining a consistent, factory-style cockpit appearance.

The housing is designed to ensure stable mounting to the windshield base and adequate rigidity of the entire structure. These design solutions help reduce mirror vibration while driving, resulting in a clear rearview image.

EC functions and LED lighting

The built-in EC module automatically dims the mirror surface when the sensor detects intense light from behind the vehicle. This eliminates the need for the driver to manually switch the mirror to night mode, making driving after dark more comfortable and safer.

Additionally, the mirror is equipped with LED lighting, which serves as a practical addition to the interior lighting. This solution improves visibility around the center console and tunnel, making it easier to use the interior after dark without having to use the main ceiling lighting.

Condition, origin and service use

This used mirror is a cost-effective alternative to a new component while maintaining the original manufacturer's specifications. This type of part is suitable for both post-accident repairs and replacing a worn or damaged mirror in a daily-driven BMW 3 Series E46.

Due to the fact that it is a component from the group of original BMW rear-view mirrors, you can count on proper fitting to the holder on the windshield and compatibility with the vehicle's electrical installation (EC and LED function - in accordance with the car's factory configuration).

Benefits of installing an original BMW mirror

• Factory fit – maintaining the original geometry and position of the mirror relative to the driver.
• Night driving comfort – automatic EC dimming reduces the glare from vehicles behind.
• Practical LED lighting – discreet interior lighting without excessive distraction for the driver.
• Consistent aesthetics – the black housing integrates well with the dashboard and headliner of the BMW 3 Series E46.
• Savings – a used element allows you to reduce the cost of repair while maintaining the original design.

If you are looking for other rear view mirrors for BMW, check out our dedicated category: rear view mirrors for BMW .

When carrying out comprehensive car repairs, it is also worth ensuring the efficiency of the cooling system - you can read about the impact of high temperatures on the engine and savings opportunities when choosing used components in the guide Summer heat vs. cooling system - used radiators and fans .