BMW 3 Series E90 E91 Heater Radiator Matrix Unit Complete 6947272

BMW 3 Series E90 E91 Heater Radiator Matrix Unit Complete is an original cabin heating system component designed for the 3 Series E90 and E91 generations. Thanks to its factory design, BMW ensures a stable flow of heating medium and uniform heat distribution into the vehicle interior, which translates into comfort during the autumn and winter seasons. This is a practical solution for users looking for a proven OEM component instead of replacements with uncertain parameters.

Specifications and technical data

• SKU: rhd-9136171-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6947272
• Substitutable numbers: 64119136171 64116947272, 9136171 6947272, 64116982992 64116950998, 6982992 6950998
• Category: Other Air Conditioning & Heating

Purpose and function in the BMW E90/E91 heating system

The heater in the 3 Series E90/E91 is responsible for heat exchange between the coolant and the air directed into the cabin. A correctly selected component allows for:

• efficient interior heating at low outside temperatures,
• stable window demisting during blower operation,
• maintaining the proper thermal balance of the engine cooling system.

The original design, tailored to the E90/E91 platform, reduces the risk of leaks, assembly issues, and incorrect fluid flow.

Compatibility and reference numbers

The presented heater is an OEM BMW component, designed specifically for the HVAC system architecture in the 3 Series E90/E91. The part has a dedicated manufacturer number and a set of interchangeable numbers, which facilitates verification of compatibility with a specific engine version and vehicle model year. When selecting, it is recommended to compare the markings with the currently installed component or service documentation.

Thanks to this, the user gains certainty that the connection geometry, nozzle placement, and dimensions will be consistent with the factory installation, without the need for modifications to the cooling system or air ducts.

Component characteristics and advantages of using OEM parts

The heater for the BMW 3 Series E90/E91 was developed as an integral part of the air conditioning and heating system, taking into account airflows in the ventilation tunnel and the thermal requirements of the power units. Using an original component translates into:

• precise fit to the HVAC module housing and factory mounts,
• properly selected heat capacity and heat exchange surface,
• compatibility with standard BMW cooling system fittings.

In practice, this means predictable heating system behavior, no need for additional seals or clamps, and easier diagnostics in the future. For workshops and individual users, this is a technically safe choice, especially compared to random replacements.

Condition, origin, and assembly aspects

The offered heater is a secondary market component, sourced from disassembly, which allows for combining an attractive price with the preservation of OEM specifications. Before installation, a standard service procedure is recommended: flushing the cooling system, checking the condition of hoses, and replacing the fluid in accordance with the vehicle manufacturer's recommendations. A correctly installed heater works with the factory air conditioning and heating controls, maintaining the original blower performance characteristics.

Due to the design of the HVAC module in the E90/E91, installation requires access to the vehicle interior and the removal of relevant dashboard elements; therefore, in the absence of experience, it is worth entrusting this operation to a specialized service.

System expansion and related BMW components

If you are planning a comprehensive repair or upgrade of the heating and air conditioning zone in your BMW and need other elements from the same group, such as fluid hoses, blower module housings, or additional control elements, check the available parts in the Other BMW category.

For users interested in comparing technical solutions used in different brands and segments, including sports versions of premium models, an article discussing design differences in power units, braking systems, and chassis may be helpful – details can be found in the entry Audi RS vs other models – what is hidden under the hood and chassis?.