Audi A4 B8 Window Finisher Frame B-Pillar Trim Door Front Left N/S Satin Black

Visual condition of the part

The product shows signs of use visible in the photos.

Audi A4 B8 Window Finisher Frame B-Pillar Trim Door Front Left N/S Satin Black is an original body component from the Doors and door panels group, designed for installation on the driver's side. It provides an aesthetic finish to the window edge and ensures stable seal guidance, which translates into acoustic comfort and a cohesive look for the side of the vehicle body.

Specifications and technical data

• SKU: 8K0837901N
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0837901N
• Substitutable numbers: 8K0837901N, 8K0 837 901 N
• Location on the vehicle: Front, Left
• Category: Doors & Door Skins

Purpose and function of the component

The described window frame trim is mounted in the area of the front left door, near the B-pillar. It is responsible for:

• stable guidance of the window edge in the upper part of the door,
• proper positioning and pressure of the seal,
• visually consistent connection of the window line with the body line,
• protection of the door edge against minor mechanical damage.

The satin black finish blends well with factory Audi styling packages, allowing the vehicle to maintain its original character after repair or replacement of the part.

Construction and fitment for Audi A4 B8

The trim has been designed as a part structurally matched to the A4 B8 generation, with the correct geometry of embossments and mounting points. Thanks to this:

• it fits the factory mounting holes in the door,
• it maintains the correct window line relative to the B-pillar,
• it allows for proper seal adhesion and reduction of wind noise.

The original origin from the Audi brand helps maintain uniform finish quality and compatibility with other side door components.

Condition, application, and benefits of installation

The item is offered as used, which allows for an economical replacement of a damaged or corroded trim while maintaining the manufacturer's original specifications. It is particularly useful in situations where:

• mechanical damage to the door or window frame has occurred,
• there are leaks in the area of the window and B-pillar,
• it is necessary to restore the factory look of the side of the body.

A properly selected window frame trim improves interior acoustic comfort, limits the ingress of water and contaminants, and allows for a consistent window line appearance after body and paint repairs.

Placement on the vehicle and identification

The presented component is intended for installation in the front – left side of the vehicle zone, which corresponds to the driver's door in left-hand drive versions. For clear identification in warehouse and service systems, the SKU designation and the assigned OEM part number along with interchangeable numbers have been used, which facilitates the selection of the correct component for a specific Audi A4 B8 configuration.

Repair expansion – Audi doors and door panels

If you are planning a comprehensive repair or upgrade of the door zone in your Audi and need other elements from the same group, such as door skins, reinforcements, or additional window frame trims, check the available parts in the Audi Doors and door panels category.

If you want to better understand when choosing original used components has an advantage over refurbishment, especially in the context of costs and durability, it is worth reading the article: Manual transmission failures – why an original used part is a more sensible choice than refurbishment. Although it concerns gearboxes, the arguments presented there well illustrate the logic of choosing original used body and equipment elements.