Microfilter Housing BMW E81 E87 E90 E91 LCI Air Duct Upper Part 6987498

Visual condition of the part

The product shows signs of use visible in the photos.

Microfilter Housing BMW E81 E87 E90 E91 LCI Air Duct Upper Part is an original ventilation system component designed for 1 and 3 Series models, responsible for the stable and airtight seating of the pollen filter insert. Thanks to its factory geometry, it ensures proper airflow through the cabin filter and limits the ingress of pollutants into the vehicle interior. This is a practical solution for users who want to restore the correct operation of the ventilation system using a part consistent with the original BMW design.

Specifications and technical data

• SKU: 6987498-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6925979
• Substitutable numbers: 64316925979, 6925979, 64316987498, 6987498
• Category: Pollen Filters

Purpose and function of the microfilter housing

The upper microfilter housing in BMW E87, E90, and E91 series is responsible for properly pressing the filter insert against the lower part of the cassette and for sealing the space between the filter chamber and the engine compartment. A correctly selected housing limits air leaks outside the filter insert, which translates into more effective air purification from dust and allergens as well as stable operation of the ventilation and air conditioning systems.

This element is particularly important in vehicles operated in urban conditions, where the concentration of pollutants is higher, as well as in cars with intensively used air conditioning. Replacing a damaged or deformed housing allows for restoring proper airflow guidance and reducing the risk of windows fogging from the inside.

Benefits of using an original BMW housing

Using an original BMW microfilter housing ensures:

• factory fitment to the mounts and guides in the bodywork,
• appropriate structural rigidity that keeps the filter in the correct position,
• compatibility with cabin filter inserts specified by the manufacturer,
• reduction of unwanted airflow noise in the cowl area.

Thanks to this, installation is predictable, without the need for modifications, and the entire ventilation system maintains parameters close to factory standards. This solution is particularly beneficial for users who expect stable and repeatable ventilation system performance without experimenting with replacements of uncertain fitment.

Product characteristics and condition

The offered housing belongs to the Cabin filters, pollen filters category, which means it is a component that works directly with the cabin air filter insert. The product comes from dismantling, which allows for maintaining compliance with the original BMW specification while providing an economical alternative to a new part. A used element of this type is often chosen for maintenance repairs when the priority is to restore full functionality of the ventilation system at reasonable service costs.

Due to the preservation of factory geometry and mounting points, the housing works well with existing cowl elements and original seals. This is particularly important in vehicles where maintaining structural integrity and avoiding leaks in the air intake zone is a priority.

Practical installation and maintenance tips

When replacing the upper microfilter housing, it is worth checking the condition of the filter insert and sealing elements in the cowl area at the same time. A correctly performed installation includes:

• thorough cleaning of the filter socket from leaves and small debris,
• checking if the filter insert is correctly seated in the lower part of the cassette,
• even pressing of the housing onto the mounts to avoid stress and leaks,
• verifying the operation of the ventilation after installation – no unusual noises and even airflow.

Such an approach allows for fully utilizing the potential of the offered housing and ensuring stable operation of the ventilation and air conditioning system in daily vehicle use.

If you are planning a comprehensive repair or upgrade of the ventilation system area in your BMW and need other elements from the same group, such as additional housings, cassettes, or filter mounting elements, check the available parts in the BMW Cabin filters, pollen filters category.

For drivers also considering repairs within the drivetrain system, a guide on the cost-effectiveness of purchasing used components may be helpful – more information can be found in the article Used gearbox – when is it worth it and what you need to remember.