Mercedes W221 Roof Ultrasonic Burglar Alarm Sensor Cover Trim Gray A2218200149

Mercedes W221 Alarm Sensor Panel Cover Cap Grey is an original interior trim element from the Headliner and Parts group, designed for the installation of the alarm sensor panel in the W221 S-Class model. The grey cover allows for an aesthetic and technically correct closure of the space around the sensors, ensuring a cohesive headliner appearance and stable mounting of the alarm system components.

Specifications and technical data

• SKU: A2218200149-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2218200149
• Substitutable numbers: A2218200149, A 221 820 01 49
• Category: Headliners & Parts

Purpose and Function of the Element

The described cover serves as a cap for the alarm sensor panel in the headliner, making the security system installation discreet while also providing adequate protection against accidental mechanical damage. The element has been specifically designed for the interior of Mercedes S-Class W221 generation, which translates to a proper fit in terms of shape, mounting points, and the line of contact with other headliner components.

The grey color of the cover is matched to the factory interior tone, allowing for visual consistency of the passenger cabin after replacing a damaged or missing part. This makes the part suitable for both post-accident repairs and for completing missing elements after equipment removal.

Construction and Headliner Fit

The Alarm Sensor Panel Cover Cap has been manufactured as an element to be installed within the headliner, taking into account factory tolerances and interior geometry. The design includes appropriate edge routing and locations for clips, which facilitates correct installation of the part without the need for modifications.

Key functional features:

• dedicated purpose for installing the alarm sensor panel in Mercedes W221,
• grey color matched to original interior finishes,
• compatibility with the factory headliner and adjacent upholstery elements.

Characteristics of an Original Mercedes Part

As a Mercedes brand element from the interior equipment group, the cover maintains the manufacturer's quality standards in terms of fit, mounting stability, and resistance to typical operational loads. Original origin facilitates trouble-free installation in place of the factory part, without the risk of dimensional mismatch or color shade differences.

The part has an assigned OEM number and related interchangeable numbers, which facilitates verification of compatibility with a specific vehicle configuration and selection of the correct variant for a given W221 S-Class example.

Condition, Service Application, and Benefits of Installation

The presented cover comes from the group of used parts, which allows for economical interior repair while maintaining the original manufacturer's specifications. This type of element is particularly useful for:

• repairs after headliner or alarm system removal,
• completing missing trim sections around the sensors,
• restoring the factory appearance of the cabin after previous modifications.

Choosing an original alarm sensor panel cover helps avoid problems with imprecise fit, squeaking, or color differences that often occur when using universal aftermarket alternatives.

How to Choose the Right Cover and Where to Find Information

When selecting this part, it is advisable to use the OEM number and interchangeable numbers, as well as vehicle data (model, generation, body version). If in doubt, comparing the shape and mounting method with the currently installed element or service documentation may be helpful.

If you are considering whether it is better to opt for a new or used part for an element like an alarm sensor panel cover, an article comparing both solutions in terms of cost and durability will be helpful – check out the material: Car Parts – New or Used? Comparing Costs, Quality, and Durability.

For those who want to consciously and safely buy interior parts online, including headliner covers and caps, a step-by-step guide will provide practical support: Safe Online Purchase of Used Car Parts – A Step-by-Step Guide.

If you also need other parts from the Headliner and Parts group dedicated to this brand, such as additional covers, brackets, or mounting panels, check the available parts in the category Mercedes Headliner and Parts.