2008-2017 Mercedes-Benz C E CLS GLK-Class Harman Becker Audio Radio Amplifier A2129007108 OEM

Condition

Used

This is a genuine factory-original Mercedes-Benz Premium audio sound system amplifier manufactured by Harman Becker. It has been carefully removed from a donor vehicle, bench-tested, and verified to be in excellent operational working order. All audio output channels provide crisp, balanced, and clear acoustic fidelity without clipping, distortion, or background static. The physical pin connection gateways and aluminum heat sink fins are straight, clean, and completely free of any moisture corrosion or bent terminals. As a pre-owned electronic module, minor cosmetic surface wear, light scuffs, or typical dust may be present on the outer aluminum casing, but nothing that impacts performance.

Item Specifics

• Brand: Mercedes-Benz / Harman Becker Genuine OEM

• Part Number: A2129007108 (Standard format: A 212 900 71 08 / 2129007108)

• Placement on Vehicle: Rear Trunk Compartment / Left Quarter Panel Cargo Cavity (Trunk-Mounted Module)

• Type: Audio Radio Sound System Amplifier / DSP Power Module

• Audio Configuration: Designed for vehicles running the mid-to-premium level Harman Becker audio infrastructure layout

• Compatible Vehicles: Fits various 2008–2017 Mercedes-Benz models, including:

  • 2010-2016 Mercedes-Benz E-Class W212 / S212 (E350, E550, E63 AMG Sedan & Wagon)

  • 2011-2017 Mercedes-Benz E-Class C207 / A207 (E350, E550 Coupe & Convertible)

  • 2008-2011 Mercedes-Benz C-Class W204 (C230, C300, C350, C63 AMG)

  • 2012-2013 Mercedes-Benz CLS-Class W218 (CLS550, CLS63 AMG)

  • 2011-2012 Mercedes-Benz GLK-Class X204 (GLK350)

• Hardware Interchanges / Cross-Associated IDs: A1729012100, A2128700194, A2129002401

• Fitment Type: Direct Replacement

Description

Up for sale is a genuine factory-original Mercedes-Benz premium audio sound amplifier processing module, specifically matching part number A2129007108. Engineered by industry leader Harman Becker, this high-output digital sound processor acts as the primary power delivery source for your luxury cabin's complex multi-channel speaker network—driving subwoofers, door mid-ranges, and upper tweeters while managing balanced theater acoustics maps.

Trunk-mounted Mercedes amplifiers are highly vulnerable to catastrophic failure stemming from subtle vehicle defects. Deteriorated taillight gaskets, clogged sunroof water drain pathways, or warped rear trunk lid seals frequently allow moisture to leak directly into the lower left cargo fender well where this amplifier sits. This water pooling instantly short-circuits the delicate circuit boards, leading to distinct failure profiles like a total loss of cabin sound (no radio, no hands-free Bluetooth audio, no command guidance chime), irregular popping or thumping feedback through the speakers when unlocking the doors, or an unresponsive display setting on your COMAND system screen. Swapping your water-damaged hardware with this dry, bench-tested original factory unit safely restores your vehicle's premium acoustic system profile.

Important Programming & System Matching Notice: To ensure a successful network handshake and proper acoustic balancing, you must verify your original part number reads A2129007108 or matches its listed official interchanges. Because this electronic chassis module operates directly on your car's digital network loop, a vehicle-specific proxy configuration alignment or dealer-level coding sequence may be required upon installation using a Mercedes specialized scan tool (such as XENTRY/DAS) to synchronize the amplifier to your vehicle's specific body chassis configurations and factory audio tier.

Included in this listing:

• (1) OEM Mercedes-Benz Harman Becker Audio Amplifier Module (Part # A2129007108)

Shipping & Logistics

• Handling Time: Ships within 2 Business Days of cleared payment.

• Carrier: Shipped via USPS or UPS (depending on package size and destination) with tracking automatically uploaded.

• Packaging: Securely wrapped in professional anti-static protective film and deeply nested inside a heavy-duty box packed with high-grade impact-absorbent padding to fully protect the aluminum casing fins, optical connection matrices, and structural multi-pin terminal sockets from any transit vibration or shock.

Thank you for your business! Please confirm that your original factory numbers match exactly before completing your purchase. If you have any technical questions or need assistance cross-referencing your vehicle's factory trim features, please send us a quick message containing your 17-digit VIN.