BMW E90 Speaker Tweeter HiFi Audio Retrofit Alpine E81 E87 E91 2153322

BMW E90 Speaker Tweeter HiFi Audio Retrofit Alpine E81 E87 E91 is an original audio component designed for factory BMW sound systems, ensuring precise high-frequency reproduction. Thanks to its OEM design, it integrates perfectly with the electrical installation and interior styling, serving as a functional addition to factory trims, decorative strips, and interior moldings. It is a practical solution for replacing a damaged tweeter or restoring a stock audio configuration.

Specifications and technical data

• SKU: 0445684-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 0445684
• Substitutable numbers: 65410445684, 0445684, 65132153322, 2153322, 65130445688, 0445688, BG
• Category: Trim

Purpose and compatibility

The presented BMW E90 Speaker Tweeter HiFi Audio Retrofit Alpine E81 E87 E91 is designed as a factory tweeter mounted in door or dashboard trim elements, depending on the specific interior configuration. As an OEM part, it is matched in terms of shape, mounts, and connectors to the installations used in these BMW generations, which facilitates installation without modifying the wiring or interfering with the upholstery.

Its original BMW Alpine lineage ensures consistency with the factory audio system – both in terms of impedance and sound characteristics, which is essential for maintaining the balance between woofers, mid-range speakers, and tweeters.

Construction and acoustic properties

The tweeter is responsible for reproducing details in the high-frequency range, such as vocal clarity, percussion cymbals, or subtle spatial effects. The OEM Alpine design has been optimized for:

• precise high-frequency reproduction without excessive harshness,
• stable operation within the factory BMW audio system,
• proper sound dispersion in the passenger cabin.

As a result, replacing a damaged tweeter with this model allows you to restore a coherent, clear sound without the need to modify the entire speaker set.

Installation and interior integration

As an element from the Trims, decorative strips, and interior moldings group, the speaker is intended for installation in factory locations provided by the manufacturer. This means:

• perfect fit for stock brackets and mounts in door panels or pillars,
• compatibility with original BMW electrical connectors,
• preservation of interior aesthetics without visible modifications.

This design facilitates work for both professional service centers and individuals servicing their own cars, minimizing the risk of looseness, resonance, or improper seating in the upholstery.

Product characteristics and condition

The offered speaker comes from the BMW line and is an original component, which translates into predictable performance within the audio system and compliance with factory vehicle parameters. The product is in used condition, which is typical for original parts removed from vehicles, while allowing for a favorable price-to-quality ratio while maintaining factory specifications.

For users who value stock BMW solutions, this is a sensible choice for repairing or restoring factory sound systems without introducing unpredictable changes to the vehicle's electronics.

System expansion and additional information

If you are planning a comprehensive repair or upgrade of your BMW's interior trim area and need other elements from the same group, such as decorative panels, grilles, or additional covers, check out the available parts in the BMW Trims, decorative strips, and interior moldings category.

For those who want to better understand how to select original used components – including audio system elements – our guide may be useful: The best used car parts – a guide to the most frequently chosen original parts. It will help you more easily assess when it is worth choosing an original tweeter instead of universal replacements.