Heat Exchanger Mercedes SLK R170 W202 Heater Radiator A2028300461

Visual condition of the part

The product shows signs of use visible in the photos.

Heat Exchanger Mercedes SLK R170 W202 Heater Radiator is a heating system component responsible for efficiently transferring heat from the coolant circuit to the cabin interior. Thanks to its precise OEM design and compatibility with the SLK R170 / W202 platform, the heat exchanger ensures stable ventilation system performance and thermal comfort for the driver and passengers. This solution is intended for users looking for a proven component with factory geometry and correct flow characteristics.

Specifications and technical data

• SKU: A2028300461
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2028300461
• Substitutable numbers: A2028300461, A 202 830 04 61
• Category: Heater Cores

Function and role of the heater heat exchanger

The heater heat exchanger in Mercedes SLK R170 and W202 models is responsible for transferring thermal energy from the engine cooling system to the air directed into the cabin. A correctly selected component:

• ensures stable interior heating under various engine thermal loads,
• maintains uniform coolant flow through the heater channels,
• reduces the risk of window fogging thanks to the appropriate efficiency of the air supply system,
• supports the proper operation of the air conditioning and ventilation system through effective heat exchange.

By maintaining the original design, the heat exchanger works with the factory heater housing, hoses, and control valves, which facilitates installation and reduces the need for system modifications.

Compatibility and fit for Mercedes SLK R170 / W202

The presented heat exchanger has been designed with the heating system architecture of Mercedes SLK R170 and C-Class W202 vehicles in mind. This means maintaining:

• the correct geometry of the connection ports for coolant hoses,
• the proper spacing of mounts relative to the heater housing,
• compatibility with the factory airflow control system in the dashboard.

Such a fit translates into seamless integration with the existing system and minimizes the time required for replacement in a professional service or independent workshop environment.

Benefits of using an original heat exchanger

Using a heater heat exchanger that complies with factory specifications in a Mercedes SLK R170 / W202 brings a number of practical operational benefits:

• Stable heating performance – the proper heat exchange surface and channel design ensure predictable cabin heating.
• Optimal cooperation with the cooling system – the appropriate coolant flow resistance helps maintain the correct engine operating temperature.
• Better ergonomics – quick window defrosting and thermal comfort contribute to driving safety and convenience.
• Consistency with other HVAC system elements – no need to adapt hoses, mounts, or seals.

For high-mileage vehicles, replacing the heater with a functional heat exchanger is often a key step in restoring the full functionality of the heating and ventilation system.

Product characteristics and service application

The offered element from the Heat Exchangers category is intended for service applications in Mercedes vehicles experiencing symptoms such as poor heating, uneven cabin warming, or noticeable restrictions in coolant flow within the heater circuit. The product is suitable for both standard maintenance replacements and major repairs within the HVAC system.

Due to the preservation of the factory design, the heat exchanger is suitable for workshops specializing in the Mercedes brand as well as individual users who expect a component with predictable operating parameters and compliance with the manufacturer's original design.

Condition and installation recommendations

The item is offered in used condition, which allows for an economical repair of the heating system while retaining a component of factory origin. Before installation, a standard service procedure is recommended, including checking the cooling system for leaks, verifying the condition of the hoses, and replacing the coolant according to the vehicle manufacturer's recommendations. This approach increases the durability of the entire system and reduces the risk of further service interventions.

If you are planning a comprehensive repair or upgrade of the heating and cooling system in your Mercedes and need other elements from the same group, such as additional heat exchangers, auxiliary parts, or components cooperating with the thermal circuit, check the available parts in the Mercedes Heat Exchangers category.

For drivers interested in a broader approach to vehicle service, including the drivetrain and its sub-assemblies, a practical guide on choosing and operating transmissions may be helpful – more information can be found in the article Transmission: manual, automatic, or DSG – common faults and a guide to buying a used gearbox.