Mercedes-Benz A B Class W169 W245 Air Deflector Lamella Glass Roof A1697800321

Mercedes-Benz A B Class W169 W245 Air Deflector Lamella Glass Roof is an original body component designed for vehicles equipped with a glass roof. Engineered by Mercedes, it ensures stable airflow over the roof surface, improving acoustic comfort and reducing turbulence when driving with the glass panel tilted or retracted. This is a precision structural component that allows you to restore the proper operation of the roof mechanism after damage or wear of the factory-fitted lamella.

Specifications and technical data

• SKU: A1697800321
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1697800321
• Substitutable numbers: A1697800321, A 169 780 03 21, EM
• Category: Other Exterior Parts & Accessories

Purpose and function in the roof system

The air deflector plays a key role in the aerodynamics of the glass roof in Mercedes A-Class W169 and B-Class W245 models. It is responsible for:

• directing airflow over the edge of the open roof,
• reducing noise and the "buffeting" effect inside the cabin,
• stabilizing the operation of the sliding glass panel mechanism,
• protecting against excessive air pressure on seals and guides.

Thanks to its proper profile and fit to the roof structure, this component allows you to maintain the vehicle's factory performance characteristics, which are particularly noticeable at highway speeds.

Original origin and fitment

The presented lamella is an OEM Mercedes part, which means full dimensional and structural compatibility with the factory equipment of W169 and W245 models with a glass roof. The original mounts and edge geometry work with the existing guides and roof frame without the need for modifications or adaptations.

Such a fit translates into:

• proper closing and positioning of the glass panel,
• maintaining the tightness of the roof system within the manufacturer's specifications,
• preserving the consistent body line and aesthetics characteristic of Mercedes.

Characteristics of the used component

The deflector comes from disassembly, which allows you to combine reasonable cost with maintaining the manufacturer's original specifications. A used component of this type is particularly attractive for maintenance repairs, where the priority is to restore the full functionality of the glass roof while controlling the service budget.

Choosing an original, used lamella instead of a replacement helps maintain material consistency with other roof mechanism components and minimizes the risk of installation or operational issues in the long term.

Benefits of installation in Mercedes A-Class W169 / B-Class W245

Using this air deflector in your Mercedes brings tangible operational benefits:

• improved acoustic comfort when driving with the glass roof open,
• reduction of vibrations and air turbulence in the cabin,
• restoration of the factory operation of the sliding roof mechanism,
• maintenance of the original body character and quality typical of the Mercedes brand.

For users who value the functionality of the glass roof and the technical consistency of the vehicle, installing an original lamella is a practical and long-term safe solution.

If you are planning a comprehensive repair or upgrade of the roof area in your Mercedes and need other elements from the same group, such as guides, covers, or additional mechanism modules, check the available parts in the Other Mercedes category.

Additional information and technical knowledge

When working on the roof, bodywork, and associated systems, it is worth expanding your knowledge about the construction of premium segment cars and the differences between standard and sports versions. In this context, an article describing the specifics of more powerful variants from one of the leading VAG group manufacturers may be helpful – you can find it here: Audi RS vs other models – what is hidden under the hood and chassis?.