BMW F40 N/S Left Rear Boot Ventilation Cover Duct Fits 9315933

BMW F40 N/S Left Rear Boot Ventilation Cover Duct is an original body component designed for the rear left side of the boot in BMW F40 series models. It ensures proper airflow within the cargo area, supporting effective ventilation and stable operating conditions for other components. Thanks to its factory-spec geometry and mounting points, it is a structurally matched solution for this specific body zone, which facilitates installation and reduces the risk of poor fitment.

Specifications and technical data

• SKU: 9315933
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9315933
• Substitutable numbers: 9315933, 64229315933
• Location on the vehicle: Rear, Left
• Category: Other Car Parts & Accessories

Purpose and function in the BMW F40

The BMW F40 N/S Left Rear Boot Ventilation Cover Duct operates in the rear part of the bodywork, on the driver's side. Its task is to provide controlled airflow between the luggage compartment and the exterior, which helps in:

• draining excess moisture from the boot,
• stabilizing air pressure when closing the tailgate,
• protecting the interior from external contaminants.

Its placement in the rear – left side area ensures the component works in harmony with the side paneling, upholstery, and seals, creating a cohesive ventilation and body system.

Construction and installation fitment

The cover has been designed as a part dedicated to the BMW F40 platform, maintaining factory mounting points and a shape tailored to the geometry of the boot. As a result:

• it fits the intended mounting location without the need for modifications,
• it maintains proper gaps and contours relative to adjacent elements,
• it does not interfere with the operation of the tailgate or seals.

Its original BMW origin helps maintain structural consistency of the bodywork and minimizes the risk of unwanted resonances or rattles in the rear of the vehicle.

Performance characteristics of the used component

The presented cover comes from the secondary market, which allows for an economical replacement of a damaged part while maintaining factory specifications. A used component is a good solution in situations where:

• the grille has been mechanically damaged due to a collision or improper removal,
• replacement of the part is necessary after body and paint repairs in the rear section of the vehicle,
• you want to maintain original quality at reasonable service costs.

Choosing an original, used cover allows you to maintain material consistency with other BMW F40 body components, which is important for both durability and the aesthetics of the boot interior.

Support in selection and integration with other BMW elements

The ventilation cover works with other rear body components, such as side panels, boot upholstery, or tailgate seals. Proper selection based on the model and mounting side (rear, left) is crucial for maintaining correct ventilation and the tightness of the entire system.

If you are planning a comprehensive repair or upgrade of the boot area in your BMW and need other elements from the same group, such as covers, grilles, or additional trim parts, check out the available parts in the Other BMW category.

More about original BMW parts and the brand's sporty character

When selecting body and equipment parts for a BMW, it is worth using knowledge about the brand's specifics and the differences between original parts and replacements. Expert materials discussing selection procedures by manufacturer numbers and the impact of original components on vehicle durability can be helpful – this is described in detail in the article BMW – sports performance and precision. How do original used parts extend the life of the Bavarian icon?.

If you are also interested in a comparison of technical solutions used in other premium segment brands, including sports versions of models, it is worth reading the analysis of drivetrain, braking, and chassis systems in the article Audi RS vs other models – what is hidden under the hood and chassis?, which shows how premium manufacturers design key components for performance and durability.