Mercedes W639 Rear Blower A/C Air Conditioning System A0008358004

Mercedes W639 Rear Climate Control Blower A0008358004 is an original part from the Blower Motors & Wheels group, designed to serve the rear air conditioning zone in the vehicle. It ensures stable operation of the climate control system in the rear of the cabin, which translates to thermal comfort for passengers and predictable performance of the entire system. This solution is particularly beneficial for servicing the factory air conditioning in Mercedes W639 models.

Specifications and technical data

• SKU: A6398302360
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6398302360
• Substitutable numbers: A6398302360, A 639 830 23 60, A 000 835 80 04, A0008358004
• Location on the vehicle: Rear
• Category: HVAC Blower Motor & Wheel

Purpose and Function of the Rear Blower

The described blower is responsible for forced air circulation in the rear of the vehicle. It is installed in the rear air vent zone, where it works with ventilation ducts and the climate control system. Thanks to it, it is possible to evenly distribute cooling or heating air, which is important both in daily use and on longer journeys with a full load of passengers.

This component belongs to the group of parts responsible for the efficient operation of the air conditioning system, therefore its proper functioning affects:

• stable airflow in the rear of the cabin,
• effective utilization of the climate control system's capabilities,
• travel comfort for rear passengers.

Construction and Compatibility with the Climate Control System

The rear blower from the Blower Motors & Wheels family has been designed as a component to work with the factory Mercedes climate control system. The design anticipates installation in the rear of the vehicle, considering the correct airflow direction and integration with the existing electrical system and air vents.

Key features include:

• dedicated placement in the rear zone of the vehicle,
• compatibility with factory air vent control,
• maintenance of operating parameters consistent with the vehicle manufacturer's specifications.

Such compatibility allows for maintaining the consistency of the entire climate control system without the need for installation modifications or the use of universal solutions.

Benefits of Using an Original Mercedes Part

Using a Mercedes component in the rear climate control blower area allows for maintaining factory standards of system operation. The original solution ensures:

• proper fit with mounting points and air ducts,
• predictable airflow parameters,
• consistency with other elements of the climate control system.

This is particularly important in vehicles used intensively, where uniform cooling or heating of the entire cabin directly impacts user comfort. The used OEM part also allows for optimizing service costs while maintaining the proper technical standard.

Condition, Installation, and Service Application

The offered rear blower is in the Blower Motors & Wheels category and is sold as a used part, which represents a reasonable compromise between price and functionality for professional service or DIY repairs. The component is intended for installation in the rear of the vehicle, as indicated by the Rear designation, which facilitates unambiguous identification of the installation location.

Before installation, standard verification of the electrical system and the condition of the air vents is recommended to ensure the proper operation of the entire system after replacement. It is also good practice to compare the removed component with the newly installed one in terms of housing shape, connectors, and mounting method.

Part Selection by Numbers and Additional Information

For precise blower matching to a specific equipment version, it is advisable to use manufacturer designations such as SKU, OEM part number, or available interchangeable numbers. This helps avoid errors when selecting the part for a given body variant and climate control configuration.

If you are planning a comprehensive repair or upgrade of the climate control zone in the rear of your Mercedes cabin and need other parts from the same group, such as additional blower motors, blower wheels, or fan drive components, check the available parts in the Mercedes Blower Motors & Wheels category.

When planning a broader drivetrain or climate control system service, it is also worth expanding your knowledge about common design issues in popular models – an article on our blog may be helpful: BMW E90 Engine Failures: Find Out What Can Ruin Your Budget!, which shows how the right choice of parts affects long-term operating costs.

If you are wondering about the cost-effectiveness of purchasing a used part compared to a new one or an aftermarket alternative, you can find a practical comparison of different solutions in the guide: Original, Aftermarket, or Used – Which Car Parts Are Most Cost-Effective?.