Mercedes GLA X156 Windshield Water Deflector Front Right O/S Trim A1566901800

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes GLA X156 Windshield Water Deflector Front Right O/S Trim is an original body component responsible for precise water drainage from the edge of the windshield on the passenger side. As part of the Window seals and trims group, it improves moisture protection, reduces air turbulence, and supports the proper operation of the wipers. This used, factory-made component ensures a proper fit to the body structure of the GLA X156 model without the need for modifications.

Specifications and technical data

• SKU: A1566901800-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1566901800
• Substitutable numbers: A1566901800, A 156 690 18 00
• Location on the vehicle: Front, Right
• Category: Window Seals, Gaskets & Trims

Purpose and function of the component

The windshield water deflector on the right side has been designed specifically for the Mercedes GLA X156 body, taking into account the shape of the windshield, the pillar, and the adjacent panels. Its task is to:

• direct the water stream away from the windshield surface and the A-pillar,
• limit water ingress around the seals and the cowl panel,
• stabilize airflow along the edge of the windshield,
• support wiper performance by reducing turbulence.

Thanks to its factory profile, the deflector works in harmony with other front body components, which translates into predictable vehicle behavior in the rain and on the highway.

Vehicle fitment and installation

The component is designed for installation in the front – right side of the vehicle zone, in the immediate vicinity of the windshield. The design corresponds to the original solution used by the manufacturer, which allows for:

• maintaining factory mounting points,
• proper fitment with the windshield, seals, and trims,
• installation without interfering with the body structure.

Such fitment is particularly important during post-accident repairs and when replacing damaged components after intensive use, where maintaining the original geometry and tightness is crucial.

Benefits of using an original deflector

Using an original water deflector in the Mercedes GLA X156 allows for maintaining the structural integrity of the windshield area. In practice, this means:

• stable water drainage from the edge of the windshield and the pillar,
• reduced risk of moisture in the area of the seals and the cowl panel,
• reduction of aerodynamic noise at higher speeds,
• aesthetic finish of the windshield edge on the passenger side.

A used, original component is a good solution for users who want to preserve the factory character of the vehicle and avoid problems with the fitment of typical aftermarket replacements.

Part condition and service application

The part comes from dismantling and is offered as a used original Mercedes component, which allows for economical repair while maintaining compliance with factory solutions. This type of component will work well both in professional body and paint shops, as well as in workshops specializing in the Mercedes brand, where repeatability of installation and predictable component behavior during operation are important.

If you want to better understand why choosing original used components matters for the vehicle's resale value, it is worth reading the article: Original used parts vs. car resale price – how not to lose?.

Expanding repairs in the windshield area

If you are planning a comprehensive repair or upgrade of the windshield area in your Mercedes and need other elements from the same group, such as additional trims, edge seals, or finishing profiles near the windshield, check the available parts in the Mercedes window seals and trims category.