Audi A1 8X C-Pillar Quarter Trim Rear Right O/S 8X4853377A Brilliant Black - Y9B

Visual condition of the part

The product shows signs of use visible in the photos. Audi A1 8X C-Pillar Quarter Trim Rear Right O/S 8X4853377A Brilliant Black - Y9B is an original body component from the Protective and decorative trims category, designed for installation on the rear right side of the vehicle. Its precisely matched geometry and factory finish in Brilliant Black Metallic - Y9B allow for restoring the consistent appearance of the side body area after repairs or the replacement of a damaged part.

Specifications and technical data

• SKU: 8X4853378A-BBL
• Mark: Audi
• Condition: Used
• OEM Part Number: 8X4853378A
• Substitutable numbers: 8X4853378A, 8X4 853 378 A
• Location on the vehicle: Rear, Right
• Color: Brilliant Black Metallic - Y9B
• Category: Body Mouldings & Trims

Purpose and function of the component

The C-pillar trim on the rear right side of the body is responsible for the aesthetic finishing of the area between the window and the side panel, while also serving a protective role for the structural edges. In the case of the Audi A1 8X, a correctly selected trim ensures:

• a visually consistent transition between the windows and the body metal,
• protection of critical edges against minor mechanical damage,
• maintenance of the vehicle's factory side line after body and paint repairs.

Brilliant Black Metallic - Y9B color

The finish in the Brilliant Black Metallic - Y9B shade is characteristic of many Audi configurations and allows for maintaining a uniform body color without the need for additional painting, provided that other elements share the same paint code. Thanks to this:

• it is easier to achieve visual surface continuity in the rear pillar zone,
• time and costs of paintwork are reduced,
• compliance with the vehicle's factory color specification is maintained.

Installation characteristics

The C-pillar trim is designed for a specific location on the vehicle – in this case, it is the rear right side. The appropriate edge shaping and mounting points allow for installation in accordance with Audi's factory service technology, which translates into:

• stable seating of the component within the C-pillar area,
• proper fitment with adjacent body components,
• maintenance of gaps and parting lines consistent with the original design. As a part from the Protective and decorative trims category, this element is intended for operation in external environmental conditions, taking into account typical loads resulting from vehicle usage.

Original origin and condition

The trim comes from the Audi brand and is an OEM component, which means it complies with factory dimensional and material standards for the A1 8X model. The product is in used condition, making it a cost-effective solution while maintaining proper fitment to the body. For many users, this is a reasonable compromise between quality and budget for post-accident or renovation repairs.

Application in repairs and upgrades

Replacing the C-pillar trim is particularly important after side damage, bodywork, or interventions in the rear window area. Using an original component allows you to:

• restore the factory look of the side body section,
• minimize the risk of shape or color mismatch,
• maintain the vehicle's visual value after repair. If you are planning a comprehensive repair or upgrade of the side body zone in your Audi and need other elements from the same group, such as covers, overlays, or additional trims, check the available parts in the Audi protective and decorative trims category.

Additional information and technical support

When selecting body components, it is crucial to pay attention to the compatibility of the model version, the side of installation, and the color finish. In case of doubts regarding the interpretation of paint codes or fitment to a specific car configuration, it is worth using Audi service documentation or consulting with a specialized service center. If you are interested in a broader context of selecting used components in vehicle technical systems, including sensitive power supply elements, the article on our blog may be helpful: Fuel dosing problems: what to look for when buying a used injection pump and fuel rails?.