Mercedes W166 Rear Door Tweeter Speaker Grille Cover Left N/S A1667370788

The Rear Left Door Tweeter Grille for Mercedes W166 is an original interior trim element designed for installation in the rear left door area. This precisely fitted component from the Door Upholstery category allows you to restore the factory appearance of the door panel and proper tweeter seating, ensuring a cohesive and aesthetic interior. By using an original part, you maintain compliance with the factory specifications of the W166 model and secure tweeter mounting.

Specifications and technical data

• SKU: A1667370788-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1667370788
• Substitutable numbers: A1667370788, A 166 737 07 88
• Location on the vehicle: Rear, Left
• Category: Door Panels

Purpose and Fit for Mercedes W166

The presented tweeter cover is dedicated to the rear left side of the body in W166 series models, which guarantees a proper fit with the shape of the door upholstery and factory mounting points. The element is designed as an integral part of the door panel, ensuring a consistent interior design line and correct tweeter orientation after installation. Its placement in the rear of the vehicle on the left side means the grille is responsible for protecting the tweeter from mechanical damage and for proper sound dispersion in the rear passenger cabin area. This is particularly important for maintaining a balanced acoustic stage in premium cars like Mercedes.

Function in the Audio System and Door Trim

The tweeter grille serves a dual role: technical and aesthetic. Technically, it provides a stable, manufacturer-intended location for the tweeter, which limits unwanted resonances and protects the diaphragm from accidental contact with passengers or luggage. Visually, it forms a cohesive part of the door upholstery, ensuring the panel maintains a uniform structure and a professional appearance. Replacing a damaged or missing grille with an original part allows you to:

• restore the full functionality of the factory audio system in the rear of the vehicle,
• achieve even distribution of high frequencies in the cabin,
• maintain the aesthetic finish of the door panel without visible defects.

Element Characteristics and Installation

As a part of the Door Upholstery group, the grille is designed for precise fitting with other trim elements. The appropriately selected shape and mounting system allow for installation in the designated location without the need for door structure modifications. This solution is particularly beneficial for accident repairs, replacement of worn interior parts, or restoring the vehicle to a factory-like condition. The element comes from the aftermarket, allowing for economical repair while maintaining the original manufacturer's specifications. A used part is a good choice wherever compliance with the factory design is important, and cost control for interior renovation is also a priority.

Application in Interior and Audio System Renovation

Replacing the tweeter grille in the rear left part of the vehicle is particularly recommended for:

• interior renovation after mechanical damage to the door panel,
• completing missing elements after upholstery removal,
• restoring the full functionality of the factory sound system in the Mercedes W166. By using an original element, you maintain the visual consistency of the entire door upholstery and the proper operating conditions for the tweeter, which translates to stable acoustic parameters in the rear of the cabin.

Configuration Expansion – Mercedes Door Upholstery

If you are planning a comprehensive repair or upgrade of the door area in your Mercedes and need other elements from the same group, such as panels, inserts, or covers, check the available parts in the Mercedes Door Upholstery category.

Additional Knowledge about Used Interior Parts

When selecting used interior trim elements, such as speaker grilles or upholstery fragments, it is worth paying attention to compatibility with the specific body version and the surface condition. To better prepare for an informed choice and avoid common mistakes when assembling parts, you can use the practical tips contained in the article Buying Used Car Parts – Common Mistakes When Choosing Tuning Parts.