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Genuine used OEM Mercedes-Benz Harman/Becker Logic7 audio amplifier for selected Mercedes-Benz S-Class W221 and CL-Class C216/W216 vehicles equipped with the factory MOST fiber-optic premium sound system.
This listing is specifically for Mercedes-Benz part number A2218705089 with Becker model designation BE7021.
This is a multiple-quantity listing. Each purchase includes one amplifier. Production dates, EC revisions and cosmetic appearance may vary slightly between the available units.
You will receive the exact item(s) shown in the listing photos.
🚗 Fitment
Commonly associated with selected:
- 2007–2009 Mercedes-Benz S-Class W221
- 2007–2009 Mercedes-Benz CL-Class C216 / W216
- Vehicles equipped with the factory Harman Kardon Logic7 audio system
- Vehicles using a MOST fiber-optic audio network
⚠️ This amplifier must not be purchased based only on the vehicle model, production year or physical appearance.
Mercedes-Benz used several amplifier part numbers, Becker models, hardware revisions and software versions within the W221 and C216/W216 platforms.
Compatibility must be confirmed using the original amplifier label, complete OEM number, Becker model, vehicle VIN, production date and factory audio configuration.
🔢 Part Numbers / Identification
- Mercedes-Benz OEM number: A2218705089
- Number without spaces: 2218705089
- Hardware/reference number shown: A2218701889
- Number without spaces: 2218701889
- Becker model: BE7021
- Manufacturer: Harman/Becker Automotive Systems
- System type: Logic7 audio amplifier
- Electrical system: 12 Volt
- Communication: MOST fiber-optic audio network
- Made in Germany
The available units may show different production dates and EC revision markings.
All identification information above was taken directly from the labels visible in the listing photos.
✅ Included
Included in this sale:
- 1 × Mercedes-Benz Harman/Becker Logic7 amplifier
- Attached housing, brackets and connectors shown in the selected unit’s photos
Each purchased quantity represents one amplifier.
Only the components pictured are included.
Not included:
- Vehicle wiring harness
- Additional MOST fiber-optic cables
- Speakers
- COMAND head unit
- Programming or installation service
- Mounting hardware not visible in the photos
- Any components not shown
⚠️ Condition
Used genuine OEM Mercedes-Benz electronic component.
The available amplifiers show normal signs of previous installation, removal and storage, including:
- Surface scratches and scuffs
- Dust and handling marks
- Oxidation or discoloration on the metal housing
- Wear, dirt or fading on identification labels
- Cosmetic differences between individual units
Connector areas, labels and housings are shown in the listing photos.
No separate bench-test report or programming service is included.
Please inspect all photos carefully before purchase.
Photos show the actual available amplifiers.
🔐 Programming / Immobilizer Information
This component is an audio amplifier. It is not an engine ECU and not an immobilizer module.
Do not assume that the amplifier will be plug-and-play in every vehicle.
Depending on the receiving vehicle, installation may require:
- Mercedes-Benz STAR/Xentry diagnostics
- Vehicle-specific coding
- Amplifier configuration
- Software or flashware verification
- MOST fiber-optic network diagnosis
- Clearing stored diagnostic trouble codes
Installation should be performed by a qualified Mercedes-Benz technician or automotive-electronics specialist.
⚠️ Compatibility Notice
Before ordering, compare the replacement amplifier with the original unit installed in the vehicle.
The following information must match or be confirmed:
- Hardware/reference number
- Connector configuration
- MOST fiber-optic connection
- Vehicle VIN
- Vehicle production date
- Factory audio equipment
- Hardware and software revision
- Current Mercedes-Benz supersession information
Do not use this listing for BE9021 amplifiers or for a different main OEM number unless compatibility has been confirmed through the vehicle VIN.
If the original amplifier has a different number, consult a Mercedes-Benz dealer or qualified specialist before purchasing.
📦 Shipping
Worldwide shipping is available.
The amplifier will be carefully packed to help protect:
- Metal housing
- Connector sockets
- MOST fiber-optic connection
- Mounting points
- Identification label
