Mercedes C140 Dashboard Air Vents Duct Ventilation A1408301654

Mercedes C140 Dashboard Air Vents Duct Ventilation is an original ventilation system component designed for precise airflow management within the cabin. Thanks to its factory design, it ensures proper fitment to the air ducts and stable mounting within the dashboard structure, which translates into user comfort and the correct operation of the entire ventilation system. This solution is particularly recommended for repairs following interior disassembly or air conditioning component replacement.

Specifications and technical data

• SKU: RHD-A1408301654
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1408301654
• Substitutable numbers: A1408301654, A 140 830 16 54
• Category: Hoses, Lines & Pipes

Function and application in the ventilation system

The duct belongs to the Hoses, pipes and tubes group and is responsible for directing the airflow from the ventilation module to the dashboard vents. The proper shaping of the duct minimizes flow losses, reduces turbulence, and helps maintain even air distribution across the entire width of the cockpit.

Using an original component in C140 series models allows for maintaining the factory geometry of the system, which is essential both for heating and cooling efficiency and for eliminating unwanted noises resulting from the poor fitment of aftermarket replacements.

Benefits of using the original duct

Using a dedicated air duct in a Mercedes C140 provides a number of practical technical benefits:

• preservation of the airflow path designed by the manufacturer within the dashboard,
• stable mounting at factory points, which reduces the risk of resonance and rattling,
• compatibility with original air vents and other air duct components,
• easier installation thanks to matched geometry and the correct connection profile.

For workshops and users, this means efficient replacement without the need for modifications and predictable ventilation system performance after the repair is completed.

Characteristics of the used component

The offered duct is a used component, which in practice means it comes from vehicle disassembly and may show signs of wear typical for this group of parts. However, maintaining structural integrity is key – the duct should be airtight, free of cracks in critical areas, and have intact mounting points so that it can properly interact with other system components after installation.

For many users and service centers, this is an economical way to restore full ventilation functionality while maintaining the original manufacturer's specifications, which is especially important in high-end vehicles such as the Mercedes C140.

Integration with other system components

The air duct works with the heater housing, the air conditioning module, and the dashboard vents, creating a coherent air distribution system. Proper positioning of the duct within the cockpit structure affects:

• even air distribution on the driver and passenger sides,
• temperature stability in the cabin at various ventilation settings,
• reduction of the risk of window fogging thanks to the correct airflow direction.

Replacing a damaged or deformed duct with an original component is recommended wherever there are problems with airflow, uneven ventilation, or noise in the dashboard area.

If you are planning a comprehensive repair or upgrade of the ventilation zone in your Mercedes and need other elements from the same group, such as additional air ducts, flexible hose sections, or rigid air supply tubes, check the available parts in the Mercedes Hoses, pipes and tubes category.

Technical support and diagnostics

When performing service work on the intake, fuel, or ventilation systems, it is worth relying on reliable diagnostics and proven procedures. For users of diesel-powered vehicles, material discussing typical symptoms and consequences of neglect regarding key components, such as injectors, may be helpful. More information can be found in the article Diesel injector faults – how to recognize them and the risks of neglecting them, which allows for better planning of service work on the vehicle.