Heater Mercedes Vito W639 Additional Heat Exchanger Rear Heater A0008350500

Heater Mercedes Vito W639 Additional Heat Exchanger Rear Heater is a heating system component specifically designed to serve the rear part of the cabin. This rear heater–heat exchanger ensures stable heat energy transfer into the vehicle interior, improving passenger comfort in the second and third rows of seats. This used component from the original Mercedes line is a functional service solution for vehicles equipped with additional rear heating.

Specifications and technical data

• SKU: A0008350500
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0008350500
• Substitutable numbers: A0008350500, A 000 835 05 00
• Location on the vehicle: Rear
• Category: Heater Cores

Purpose and function in the heating system

The described heat exchanger operates within the coolant circuit, transferring heat to the rear heating module in the Mercedes Vito W639. Positioned in the rear of the vehicle, it is responsible for effectively heating the passenger or cargo space, which is particularly important in passenger versions, vans, and special conversions.

Thanks to its dedicated placement in the rear zone of the vehicle, this component allows for:

• more uniform temperature distribution throughout the cabin,
• relieving the front heater at low temperatures,
• increasing thermal comfort for passengers during long trips.

Construction and fitment for Mercedes Vito W639

The exchanger belongs to the Heat exchangers group, meaning its design is optimized for efficient transfer of thermal energy from the cooling system to the air directed into the interior. The geometry of the connections and the shape of the housing are adapted to the architecture of the rear heating system in the Mercedes Vito W639, which facilitates installation in the factory-designated location.

The original Mercedes origin translates into:

• compatibility with factory mounts and hose routing,
• proper fluid and air flow parameters,
• consistency with other components of the vehicle's heating system.

Performance characteristics of the used component

As a used part, the rear heater heat exchanger is a sensible service choice for users seeking a compromise between repair costs and functionality. This type of component allows for restoring the efficiency of the rear heating in situations where the existing exchanger has developed leaks or lost thermal performance.

In practice, using a used heat exchanger enables:

• reducing repair costs compared to a new component,
• maintaining the original heating system specifications,
• efficiently restoring the rear cabin heating function.

Benefits of using a dedicated heat exchanger

The use of a dedicated rear heater heat exchanger in the Mercedes Vito W639 translates into significantly better control of thermal conditions in the vehicle. Stable heating of the rear interior is important both in passenger transport and in commercial applications where maintaining a specific temperature for transported cargo is essential.

Key advantages of this solution include:

• increased travel comfort for rear-seat passengers,
• more predictable operation of the entire heating system,
• the ability to more precisely control the temperature in different zones of the vehicle (front/rear).

If you are planning a comprehensive repair or upgrade of the rear cabin heating zone in your Mercedes and need other components from the same group, such as additional heaters, coolant hoses, or air distribution modules, check the available parts in the Mercedes Heat exchangers category.

To better understand how thermal conditions affect the operation of the cooling and heating system and when it is worth choosing used components, check out the guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, which discusses practical aspects of operating and servicing such elements.