Mercedes C118 W177 W247 Rear Bass Speaker Subwoofer A2478203702

Mercedes C118 W177 W247 Rear Bass Speaker Subwoofer is an original audio component designed for installation in the rear of the vehicle, specifically engineered for Mercedes models. This used OEM component allows you to maintain the consistency of the sound system, providing solid, deep bass performance without interfering with the factory installation. It is a practical solution for users who want to restore the full functionality of the factory audio system after damage or wear of the existing subwoofer.

Specifications and technical data

• SKU: A2478203702
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2478203702
• Substitutable numbers: A2478203702, A 247 820 37 02
• Location on the vehicle: Rear
• Category: Trim

Purpose and compatibility with Mercedes models

The presented subwoofer has been developed for modern C118, W177, and W247 body types, where the factory audio system requires a precisely matched subwoofer in the rear of the vehicle. The OEM design ensures proper fitment with factory mounts and compatibility with the original wiring harness, which facilitates installation and reduces the risk of audio system malfunctions.

By maintaining factory acoustic parameters, the speaker works in harmony with the stock amplifier and other drivers, maintaining a consistent sound character throughout the vehicle's interior.

Subwoofer performance characteristics

The subwoofer is responsible for generating low frequencies that give music mass and dynamics. In practice, this means:

• better bass reproduction at lower volume levels,
• stable performance at higher output levels,
• preservation of the factory tonal balance of the audio system.

Placement in the rear of the vehicle allows for effective use of the luggage compartment as an acoustic chamber, which translates into a fuller and more uniform distribution of low tones in the cabin. Thanks to this, the factory sound system can operate according to the manufacturer's specifications, without the need for additional amplifiers or installation modifications.

Benefits of using an original subwoofer

Using an original subwoofer in Mercedes C118, W177, and W247 series cars brings a number of practical benefits:

• full compatibility with vehicle electronics and the factory audio system,
• no need for modifications to the electrical installation or upholstery,
• consistent sound with other speakers in the doors and dashboard,
• reduced risk of interference, crackling, and unwanted resonances.

This solution is particularly beneficial for users who want to keep the car in a configuration close to factory specifications while expecting stable, predictable audio system performance. The original subwoofer is also a good choice for post-accident repairs or restoring full interior functionality after previous modifications.

Condition and practical application

The item comes from the Trims, decorative strips, and moldings category, which in this case means a component mounted within the interior and trunk trim, integrated with finishing elements. The used subwoofer is a sensible choice for those looking for a factory solution in a more economical form, while maintaining the original design and purpose.

In daily use, this type of subwoofer will perform well both in cars used mainly in the city and on longer trips, ensuring acoustic comfort and stable operation of the multimedia system.

System expansion and additional information

If you are planning a comprehensive repair or upgrade of the interior and trunk area in your Mercedes and need other elements from the same group, such as covers, overlays, or additional strips, check the available parts in the Mercedes Trims, decorative strips, and moldings category.

For users interested in a broader perspective on the operation and refurbishment of components in cars of this brand, technical materials regarding power units may be useful, such as the article Second life of the Mercedes OM642 engine – how injectors and a turbocharger restore the power of the 3.0 V6 CDI, which shows how properly selected components affect the refinement and durability of the entire vehicle.