BMW E46 Convertible Rear Centre Harman Kardon HI-FI Subwoofer Speaker 8378552

Visual condition of the part

The product shows signs of use visible in the photos.

BMW E46 Convertible Rear Centre Harman Kardon HI‑FI Subwoofer Speaker is a factory-fitted subwoofer designed for installation in the rear section of the vehicle. This original BMW component from the Harman Kardon system ensures consistent sound quality with the other speakers and provides a solid foundation for restoring the full functionality of the factory audio system in your convertible. It is a practical solution for users who want to maintain the original character of the HI‑FI audio system without interfering with the wiring.

Specifications and technical data

• SKU: 8378552
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8378552
• Substitutable numbers: 8378552, 65138378552
• Location on the vehicle: Rear
• Category: Other Interior Parts & Accessories

Purpose and compatibility

The presented subwoofer has been designed specifically for the BMW E46 Convertible version with the factory Harman Kardon HI‑FI system. Its placement in the rear of the vehicle allows for effective filling of the cabin with low frequencies, while maintaining the proper acoustics for a convertible body style. Thanks to the custom-fit housing and factory mounting points, the component works seamlessly with the original audio installation and the factory amplifier.

Construction and acoustic properties

The subwoofer acts as the central bass speaker in the Harman Kardon HI‑FI system, responsible for generating controlled bass in the rear zone of the cabin. The design has been optimized for:

• maintaining a consistent frequency response with the other BMW E46 Convertible speakers,
• stable operation at typical HI‑FI system volume levels,
• minimizing unwanted resonances for the convertible body.

Thanks to this solution, you achieve balanced, factory-spec bass without the need to modify the upholstery or electrical installation.

Installation in the rear of the vehicle

The subwoofer is intended for installation in the rear zone of the BMW E46 Convertible, in accordance with the manufacturer's original design. Proper placement in the vehicle promotes:

• correct distribution of acoustic pressure in the cabin,
• maintenance of trunk and passenger space functionality,
• easier integration with the existing audio wiring harness.

Using an original component helps reduce installation time and the risk of fitment issues, which is particularly important when working with HI‑FI class audio systems.

Characteristics of the used product

The offered subwoofer is a used item, sourced from vehicle dismantling. Such components are a popular choice for servicing factory audio systems when you want to maintain the original BMW specification and compatibility with the existing installation. In practice, this means the possibility of an economical repair or restoration of the Harman Kardon HI‑FI system without the need for universal replacements.

Audio system expansion and additional materials

If you are planning a comprehensive audio upgrade in your car and want to better understand the differences between factory systems and sports versions, it is worth checking out comparative materials regarding engine, brake, and chassis construction in high-performance cars – you will find them in the article Audi RS vs other models – what is hidden under the hood and chassis?, which shows how manufacturers differentiate equipment between standard and sports versions.

Related BMW items – Other category

If you are planning a comprehensive repair or upgrade of the interior equipment and comfort electronics in your BMW and need other items from the same group, such as control modules, additional speakers, or mounting accessories, check out the available parts in the Other BMW category.