Vent Cassette Filter BMW E81 E82 E87 Rear Ventilation Boot 6900748

The BMW E81 E82 E87 Rear Air Vent Grille Breather is an original body ventilation system component designed for installation in the rear of the vehicle. It ensures controlled airflow from the cabin to the outside, supporting proper ventilation, window defogging, and acoustic comfort. This is a practical solution for users who want to professionally restore the factory ventilation parameters in their BMW 1 Series.

Specifications and technical data

• SKU: 6905748
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6905748
• Substitutable numbers: 64226937994, 6937994, 64226900748, 6900748, 64220301467, 0301467, 64226905748, 6905748
• Location on the vehicle: Rear
• Category: Other Interior Parts & Accessories

Purpose and Function of the BMW Air Vent Grille

The presented breather grille is a body element from the Other category, responsible for expelling air from the interior of the vehicle through the rear of the body. Mounted in the trunk area or rear bumper, it stabilizes cabin pressure, which translates to:

• efficient operation of the ventilation and air conditioning system,
• more effective moisture removal from the interior,
• reduction of window fogging,
• more comfortable door closing due to pressure equalization.

Its placement at the rear of the vehicle allows for discreet yet effective air expulsion without compromising the car's exterior styling.

Original Origin and Compatibility

The air vent grille was designed by BMW as a factory-fitted component, guaranteeing a precise fit to the body and compatibility with E81, E82, and E87 series models. Original origin means:

• maintaining the body's seal as intended by the manufacturer,
• proper integration with trunk upholstery and trim elements,
• no need for modifications to mounting points or the body during installation.

An additional advantage is the presence of dedicated part numbers and interchangeable numbers, which facilitates verification of compatibility with specific vehicle equipment versions.

Item Condition and Service Application

The offered grille is a used part, allowing for economical repair of the ventilation system while maintaining the original manufacturer's specifications. This type of component is particularly useful in situations where:

• the grille has suffered mechanical damage (e.g., after a rear-end collision),
• there are leaks causing water or noise ingress into the cabin,
• the element needs replacement after bodywork and painting.

A correctly selected breather restores proper ventilation system operation and reduces the risk of moisture in the trunk upholstery.

Installation in the Rear of the Vehicle

The grille's placement in the rear of the body was structurally planned by the manufacturer, ensuring a systematic and repeatable installation process. In practice, this means:

• utilizing factory mounting points in the body,
• easy alignment with existing ventilation openings,
• possibility of installation as part of standard service work without specialized modifications.

This solution is beneficial for both workshops and users who service their BMWs themselves, as it reduces working time and minimizes the risk of installation errors.

Alternative Parts and Technical Knowledge

If you are looking for other parts from the Other category dedicated to this brand, check out our offer for other BMW parts, where you will find a wide selection of body and interior components tailored to various models.

For drivers interested in comparing the performance and technical solutions in sports cars, we recommend the blog article Audi RS vs. Other Models – What Lies Under the Hood and Chassis?, which discusses differences in engine, brake, and chassis construction and their relation to selecting appropriate replacement parts.

If you want to better plan service work on your car and learn which wear parts are most frequently replaced, the guide TOP 10 Most Frequently Replaced Parts in Your Car may also be helpful, offering practical tips for keeping your car in good technical condition.