Mercedes-Benz C-Class W203 Heater Core Matrix Radiator Pipe A2038301715

The Mercedes-Benz C-Class W203 Heater Hose is an original component of the cabin heating system, belonging to the Hoses, Pipes & Tubes group. Specifically designed for C-Class W203 models, it ensures stable coolant flow between the heater core and other cooling system components. A used OEM part is a sensible choice for professional repairs when you prioritize factory fit and predictable performance.

Specifications and technical data

• SKU: rhd-A2038301715
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2038301715
• Substitutable numbers: A2038301715, A 203 830 17 15, AS
• Category: Hoses, Lines & Pipes

Purpose and Function in the Heating System

The heater hose is responsible for precisely directing coolant to the heat exchanger inside the dashboard. A correctly selected component from this group minimizes the risk of leaks, facilitates system bleeding, and stabilizes the flow of heating medium, which translates to uniform interior heating of the vehicle.

Thanks to its construction conforming to factory Mercedes specifications, this part works with original quick connectors, clamps, and other hoses, reducing the need for modifications during installation. This is particularly important when servicing vehicles where maintaining the original geometry of the cooling and heating system is crucial.

Benefits of Using an Original Heater Hose

Choosing an original heater hose for the C-Class W203 allows you to maintain the material and structural integrity of the entire system. In practice, this means:

• factory fit to the heater core spigots and other hoses,
• stable coolant flow without unwanted kinks,
• reduced risk of leaks at critical connection points,
• easier diagnostics and future servicing.

For workshops and individual users, this translates to more predictable installation and a lower risk of needing to re-intervene in the heating system after a short period of operation. A used OEM part often integrates better with the existing installation than aftermarket alternatives with universal geometry.

Condition, Fitment, and Service Application

The offered hose is a used part, salvaged from a dismantled vehicle, offering a reasonable cost while maintaining the original manufacturer's specifications. This type of component is particularly useful for:

• repairs after a heater core failure or coolant leak in the bulkhead area,
• comprehensive replacement of heating system components in the C-Class W203,
• restoring the factory configuration after previous modifications.

Due to its precise fit for the specific C-Class generation, the hose facilitates maintaining the correct routing of hoses in the engine bay and near the bulkhead, which is important for both reliability and convenience of subsequent servicing.

Support for Choosing a Used Part

When selecting components from the Hoses, Pipes & Tubes group for a Mercedes, it's worth paying attention to compatibility with the engine system and the heater configuration in the specific vehicle. If you have doubts about choosing between a refurbished part and a salvaged component, the following guide may be helpful: Refurbished or Used Original – Which Part to Choose for Repairs?.

If you are planning a comprehensive repair or upgrade of the cooling and heating system area in your Mercedes and need other parts from the same group, such as additional hoses, flexible pipes, or rigid coolant tubes, check the available parts in the Mercedes Hoses, Pipes & Tubes category.