Audi A4 B8 Door Loud Speaker Rear Left Right N/O/S Bang & Olufsen 8K0035411A

Visual condition of the part 

The product shows signs of use visible in the photos. 

Audi A4 B8 Door Loud Speaker Rear Left Right N/O/S Bang & Olufsen is a factory audio system component designed for installation in the rear doors on either the left or right side. Thanks to the collaboration with the renowned audio manufacturer Bang & Olufsen, it ensures consistent sound with the other speakers in the vehicle and precise fitment to the door structure of the Audi A4 B8.

Specifications and technical data

• SKU: 8K0035411A
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0035411A
• Substitutable numbers: 8K0035411A, 8K0 035 411 A
• Location on the vehicle: Rear, Right, Left
• Category: Door Panels

Purpose and compatibility

The presented speaker is a component of the factory audio system installed in the B8 generation Audi A4 model. It has been designed specifically for operation in the rear doors, with the possibility of installation on both the left and right sides, which facilitates the selection of the appropriate component when repairing or replacing a damaged speaker.

Due to its design, which complies with the solutions used by the vehicle manufacturer, the speaker works with the original electrical installation and factory mounts in the door trim, allowing for the preservation of the original functionality and aesthetics of the interior.

Construction and acoustic properties

The Bang & Olufsen system in the Audi A4 B8 was developed with the goal of even sound coverage throughout the cabin; therefore, the rear door speaker plays an important role in building the spatial soundstage. The applied diaphragm construction and matched operating characteristics enable faithful reproduction of mid-range and selected high frequencies, which translates into clear vocals and well-defined background details.

The original build ensures:

• stable operation at typical volume levels used in the car,
• proper tuning with the other speakers of the Bang & Olufsen system,
• preservation of the factory tonal balance between the front and rear of the cabin.

Installation in the door trim

The speaker is intended for installation in the Door trims of the Audi A4 B8, using factory mounting points. Thanks to this, the replacement process is predictable and does not require interference with the door panel structure or the use of additional mounting adapters.

With proper installation:

• the acoustic tightness of the door cavity is maintained,
• there are no unwanted resonances resulting from speaker mismatch,
• the electrical installation remains consistent with the vehicle's factory schematic.

Condition and service application

The item comes from disassembly and is offered as a used part, which allows for an economical repair of the audio system while maintaining the vehicle's original specifications. This is a practical solution in the event of speaker damage due to flooding, overload, or mechanical damage to the door trim.

Choosing an original component from the same Bang & Olufsen product line minimizes the risk of sound differences between the sides of the vehicle and eliminates electrical and mechanical compatibility issues typical of universal replacements.

Expanding the door zone in Audi

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 panels, trims, or speaker grilles, check the available parts in the Audi door trims category.

Additional technical support

During service work within the bodywork and components mounted in the doors, play and unwanted noises coming from the suspension often also become apparent. To better plan the scope of repairs and optimize costs, it is worth familiarizing yourself with practical tips regarding diagnostics and the selection of used components, available in the article Suspension knocking? Discover a clever way to restore factory handling precision without spending a fortune at the service center.