Mercedes-Benz ML GL W164 Tunnel Gearbox Sound Insulation Cover Panel Damping

Mercedes-Benz ML GL W164 Tunnel Gearbox Sound Insulation Cover Panel Damping is an original body component designed for the brand's SUV models. The part serves as a noise and vibration damping panel in the center tunnel area, improving the acoustic comfort of the cabin and the refinement of the drivetrain. The black color scheme facilitates aesthetic integration with the factory interior finish.

Specifications and technical data

• SKU: A1646820101
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1646820101
• Substitutable numbers: A1646820101, A 164 682 01 01, BG
• Color: Black
• Category: Splash Guards & Mud Flaps

Purpose and technical function

The described gearbox tunnel sound insulation cover has been designed specifically for the chassis construction of the ML and GL W164 series. Its task is to limit the transmission of transmission noise and vibrations from the center tunnel area into the vehicle interior. As a result, the cabin remains better acoustically insulated, and the ride is more comfortable for the driver and passengers.

The element acts as a damping and insulation panel that stabilizes airflow and reduces resonance in the gearbox area. Proper fitment to factory mounting points allows for maintaining the original acoustic characteristics of the body, which is particularly important in premium class vehicles.

Construction, material and color

The cover is manufactured in black, which facilitates integration with factory chassis and interior components. This color is practical in use, less prone to showing dirt, and blends well with the typical finish of the center tunnel zone in vehicles of this series.

The panel's construction was developed to achieve a favorable compromise between rigidity and vibration damping capability. The properly formed geometry facilitates installation in the intended location and ensures stable adhesion to adjacent body components, which is crucial for the effectiveness of the sound insulation.

Condition, fitment and service application

The product comes from a group of used parts, which allows for an economical repair or replacement of a missing element in the vehicle while maintaining the manufacturer's original specifications. For workshops and service centers specializing in the brand, this is a practical solution for reconstructing the factory acoustic insulation package in the gearbox tunnel area.

The cover is suitable both for replacing a damaged panel and for completing missing elements after body repairs or work on the drivetrain. Maintaining the original geometry and mounting points facilitates installation and reduces the risk of improper fitment with other components.

Benefits of using an original sound insulation cover

• Better acoustic insulation – reduction of gearbox noise and vibrations transmitted to the cabin.
• Consistency with factory construction – maintaining the original acoustic and mechanical characteristics of the body.
• Practical black color – aesthetic match to other tunnel and chassis elements.
• Cost-effective solution – used original part as an alternative to new components.

Related components and technical knowledge

When working in the center tunnel area, one often also interacts with drivetrain components, including the clutch and transmission. For better repair planning and part selection – including used ones – it is worth using technical materials, such as the article Clutch and dual-mass flywheel – diagnostics and selection of drivetrain parts, which helps assess the condition of components working with the gearbox.

If you are planning a comprehensive repair or upgrade of the body zone in your Mercedes and need other elements from the same group, such as covers, panels, or additional mud guards, check the available parts in the Mercedes Mud Flaps category.