BMW 1 3 Series e81 e87 e90 Heater Radiator Matrix Unit Complete

BMW 1 3 Series e81 e87 e90 Heater Radiator Matrix Unit Complete is a component of the air conditioning and ventilation system responsible for the efficient transfer of heat into the vehicle interior. Thanks to the factory BMW design, this heat exchanger ensures stable operating parameters and proper compatibility with the original engine cooling system.

Specifications and technical data

• SKU: rhd-6947258
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 64116947258
• Substitutable numbers: 64116947258, 6947258, 64119136164, 9136164, 64119130647, 9130647, 64116950992, 6950992
• Category: Heater Cores

Purpose and function in the heating system

The presented heater is designed for installation in BMW 1 Series E81/E87 and BMW 3 Series E90 models, where it is responsible for transferring heat from the coolant circuit to the air directed into the cabin. As an element of the Heat Exchangers category, it works in direct contact with the cooling system, which is why its correct selection is crucial for thermal comfort and windshield demisting.

A properly selected heater radiator allows for maintaining a stable interior temperature, reduces window fogging, and supports the uniform operation of the entire air conditioning system. In the case of BMW, it is particularly important to maintain structural compliance with the factory design, which translates into proper hose routing, connection tightness, and correct airflow through the heater housing.

Compatibility and fitment for BMW

The offered heater has been developed specifically for the E81/E87 and E90 platforms, ensuring it retains the correct mounting points and connection geometry. This means that installation in place of a worn-out component does not require any modifications to the installation or interference with the dashboard structure. Factory fitment for BMW minimizes the risk of leaks, improper coolant flow, or issues with system bleeding.

The component has dedicated part numbers and interchangeable numbers, which facilitates verification of compatibility with a specific vehicle configuration. In practice, this means it can be directly swapped within the same family of BMW components without the need for adapters or hose modifications.

Performance characteristics and benefits of use

As a complete heater unit, the heater radiator provides full functionality in terms of heat exchange between the coolant and the air supplied to the cabin. A properly designed heat exchange surface and flow channels allow for quickly reaching the set temperature inside, which is particularly important in winter conditions.

Key benefits of using an original BMW solution include:

• maintaining factory heating and windshield demisting characteristics,
• proper cooperation with the air conditioning system and airflow control,
• structural consistency with other cooling system components,
• reduced risk of leaks thanks to matched connections.

Choosing an original heat exchanger is particularly important in cars where predictable heating system behavior and stable operating parameters over a long period of use are essential.

Condition, verification, and service application

The offered component is in used condition, which in practice means it has been dismantled and verified for further use. This type of component is an attractive service solution for users who want to restore the efficiency of the heating system while keeping costs reasonable and using the original BMW design.

Replacing the heater is recommended in situations where symptoms such as poor cabin heating, the smell of coolant in the interior, window fogging despite a functional air conditioning system, or visible signs of leakage near the heater housing occur. Using an original heat exchanger allows for restoring correct operating parameters without compromising on fitment.

If you are planning a comprehensive repair or upgrade of the cooling and heating zone in your BMW and need other elements from the same group, such as additional heaters, radiators, or heat exchange modules, check the available parts in the BMW Heat Exchangers category.

For drivers interested in a broader context of using original, used components in premium cars, including vehicles related to BMW in terms of segment, the article describing how to maintain the brand's character using dismantled parts may be helpful – more information can be found in the material Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?.