Audi A8 4H D4 Heater Matrix Heat Exchanger Rear 4H0898037B

Audi A8 4H D4 Heater Matrix Heat Exchanger Rear is an original heating system component designed for the rear cabin of the Audi luxury sedan. Engineered as a high-efficiency heat exchanger, it ensures stable heater performance and thermal comfort for passengers in the rear seats. This used OEM component allows for a technically correct repair without interfering with the vehicle's factory design.

Specifications and technical data

• SKU: 4H0898037B
• Mark: Audi
• Condition: Used
• OEM Part Number: 4H0898037B
• Substitutable numbers: 4H0898037B, 4H0 898 037 B
• Location on the vehicle: Rear
• Category: Heater Cores

Purpose and function in the heating system

The presented heat exchanger is part of the Heat exchangers category and operates in the rear zone of the Audi A8 4H D4 generation heating system. Its task is to effectively transfer thermal energy from the coolant circuit to the air directed to the rear of the cabin, which translates into even interior heating and stable operation of the automatic air conditioning.

Its location in the rear of the vehicle allows for precise temperature control for rear passengers, which is particularly important in premium class cars where travel comfort in all seating positions is a priority.

Construction, fitment, and installation

The heat exchanger was developed by the vehicle manufacturer for full integration with the factory Audi heating system. This means:

• maintaining the correct geometry of connections and the housing,
• compatibility with original mounts in the rear part of the body,
• proper cooperation with hoses and the heating coolant circuit.

Thanks to this, installation in place of a worn or leaking component proceeds in an orderly manner, without the need for system modifications. Factory fitment reduces the risk of leaks and problems with system bleeding.

Benefits of using an original heat exchanger

Using an original heat exchanger in the Audi A8 4H D4 brings a number of practical operational benefits:

• maintaining a stable temperature in the rear of the cabin,
• proper cooperation with the air conditioning and heating control system,
• maintaining factory flow parameters and thermal efficiency,
• reducing the risk of window fogging in the rear zone of the interior.

A used OEM component is a good solution for repairs where compliance with factory specifications and reasonable service costs are important, while maintaining stable heating system operation.

Installation zone and fault diagnostics

The location in the rear of the vehicle interior means that typical symptoms of wear or damage to this heat exchanger may include:

• lack of or limited heating in the rear cabin zone,
• uneven temperature distribution between the front and rear of the vehicle,
• problems with thermal comfort for passengers in the rear seats.

Replacing a worn component with a functional Audi A8 4H D4 Heater Matrix Heat Exchanger Rear restores proper system operation and allows for full utilization of the advanced air conditioning capabilities in the Audi A8.

If you are planning a comprehensive repair or upgrade of the heating and air conditioning area in your Audi and need other components from the same group, such as additional heat exchangers, heater modules, or air distribution elements, check the available parts in the Audi Heat exchangers category.

Technical support and part selection

When selecting a used heat exchanger for a specific Audi A8 4H D4 configuration, it is worth paying attention to compatibility with the vehicle's heating system and correct assignment to the rear installation zone. Proper component selection reduces vehicle downtime and minimizes the risk of repeated intervention in the installation.

Additional information regarding heating and air conditioning system servicing, principles of selecting used OEM components, and maintenance schedules can be found in the article Air conditioning and heating – part selection and maintenance for year-round comfort, which serves as a practical supplement to knowledge when planning service work.