Mercedes W221 Wing Mirror Base Door Left N/S Auto Dip Mount Iridium Silver 775

Mercedes W221 Wing Mirror Base Door Left N/S Auto Dip Mount Iridium Silver is an original component from the Exterior Mirrors group, designed for installation on the driver's side. It allows for the secure mounting of the complete mirror assembly with an auto-dimming function, maintaining the factory geometry and body aesthetics in the Iridium Silver 775 shade.

Specifications and technical data

• SKU: rhd-A2218100376-IRS
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2218100376
• Substitutable numbers: A2218100376, A 221 810 03 76
• Location on the vehicle: Left
• Color: Iridium Silver Metallic - 775
• Category: Mirror Assemblies

Application and vehicle function

The mirror base is designed for installation on the left side of the vehicle body, in the door area. It is responsible for the precise connection of the mirror structure to the door panel, transferring aerodynamic loads, and stably supporting the mirror module with the auto-dip function. This ensures the correct mirror position relative to the driver, which contributes to safety and comfort when observing the vehicle's surroundings.

Color and visual matching

The component is finished in the Iridium Silver Metallic – 775 shade, which allows for a consistent match with the factory body paint in this color. For Mercedes W221 users, this means the possibility of an aesthetic replacement of a damaged mirror base without the need for additional painting or visual compromises, provided the vehicle has the same paint code.

Design characteristics

The mirror base serves as a load-bearing element for the entire exterior mirror assembly. Its geometry is adapted to the specific door line of the Mercedes S-Class W221 generation, which ensures:

• proper adhesion to the door panel,
• stable mounting of the adjustment mechanism and mirror housing,
• maintenance of the correct mirror angle relative to the driver.

By maintaining the original design, it is possible to use existing mounting points and factory seals, which facilitates installation and reduces the risk of unwanted vibrations or wind noise.

Condition, origin, and benefits of use

The offered mirror base is an original Mercedes component in used condition. For the user, this means maintaining factory fitment parameters and compatibility with other mirror and door components. Compared to aftermarket replacements, the original mirror base allows for more predictable installation and better alignment with the body line.

Integration with other body elements

When replacing the mirror base, it is worth paying attention to the condition of other components of the mirror assembly – the housing, mirror glass, adjustment mechanism, and wiring harness. Consistent matching of these elements translates into the proper operation of the adjustment, folding, and dimming functions, as well as reducing noise at higher speeds.

If you are planning a comprehensive repair or upgrade of the side body area of your Mercedes and need other elements from the same group, such as housings, glass inserts, or complete mirror modules, check the available parts in the Mercedes Exterior Mirrors category.

Additional technical support

When selecting body elements and mirror accessories, it is worth using practical guides regarding compatibility, OEM markings, and installation procedures. Extended information on verifying parts by VIN, interpreting manufacturer markings, and good service practices can be found in the article BMW B58 code – checklist before buying a turbocharger and intercooler, which may be helpful as a general guide for working with OEM and aftermarket components.