Ventilation Grille Mercedes W164 W221 Rear Chassis Air Vent Grille A1648300042

The Mercedes W164 W221 Rear Underbody Air Vent Grille is an original part from the Cladding, Decorative Strips, and Decorations category, designed for installation in the rear of the vehicle body. It ensures controlled airflow under the vehicle, supporting proper ventilation and stable operating conditions for body components. This is a practical solution for users who want to restore the factory functionality and aesthetics of the rear underbody area in Mercedes vehicles.

Specifications and technical data

• SKU: A1648300042
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1648300042
• Substitutable numbers: A1648300042, A 164 830 00 42
• Location on the vehicle: Rear
• Category: Trim

Purpose and Function of the Underbody Air Vent Grille

The rear underbody air vent grille is responsible for controlled air discharge and pressure equalization in the rear section of the vehicle body. A correctly selected part:

• stabilizes airflow in the vicinity of the rear of the vehicle,
• limits moisture and dirt accumulation in the body space,
• supports the preservation of factory sealing and proper closing of body elements,
• maintains a cohesive appearance of the lower body zone.

Thanks to its precise fit for the specific mounting position at the rear of the vehicle, the grille maintains proper airflow geometry, which is important for both user comfort and the durability of body components.

Original Mercedes Part – Fit and Compatibility

The presented air vent grille is an original component designed for Mercedes W164 and W221 models. Using a factory solution means:

• a secure fit for the intended mounting location at the rear of the vehicle,
• compliance with the body structure and factory mounting points,
• visual consistency with other underbody trim elements.

An original grille from the Cladding, Decorative Strips, and Decorations category helps avoid problems typical of aftermarket alternatives, such as leaks, poor fit, or the need for mounting modifications.

Component Characteristics and Installation in the Rear of the Vehicle

The grille is specifically designed for installation in the rear underbody area, facilitating service and replacement of worn or damaged parts. In practice, this means:

• a factory-designated mounting location at the rear of the vehicle body,
• the possibility of removing the old grille and installing this part as part of standard service procedures,
• no need for modifications to the underbody structure when installed correctly.

For workshops and users, this translates to predictable working times and the ability to restore the vehicle to its original technical condition without additional modifications.

Used Condition – A Practical Service Solution

The item is offered in used condition, representing a reasonable compromise between repair cost and maintaining the original manufacturer's specifications. Choosing this solution is particularly beneficial when:

• the existing grille has suffered mechanical damage or deformation,
• preserving the original construction and geometry of the part is important,
• an economical yet technically correct repair is desired.

A used component allows for the restoration of proper rear underbody ventilation without compromising the manufacturer's original design.

Related Mercedes Trim Elements

If you are planning a comprehensive refresh of the lower body area and are also interested in other trim elements, covers, or decorative components for this brand, check out the available parts in the Mercedes Cladding, Decorative Strips, and Decorations category.

More About Used Car Parts

If you want to better understand how to safely choose used car parts and when they are a sensible alternative to new components, it's worth reading the article Used Car Parts: Myths and Facts You Need to Know, which clearly explains the most common concerns drivers have.