BMW 3 Series F30 F31 LCI Mudguard Flap Cover Cap Control Unit Box 8642134

BMW 3 Series F30 F31 LCI Mudguard Flap Cover Cap Control Unit Box is an original BMW body component designed to protect the control module area from dirt and moisture. Engineered specifically for this 3 Series generation, it ensures a precise fit, stable mounting, and maintenance of the factory wheel arch geometry.

Specifications and technical data

• SKU: 8642134
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8642134
• Substitutable numbers: 8642134, 12908642134
• Location on the vehicle: Right
• Category: Other Interior Parts & Accessories

Purpose and function of the component

This mudguard flap is dedicated to BMW 3 Series F30/F31 LCI (facelift) models and operates in the right-side wheel arch area of the vehicle. Its task is to isolate the control unit box from direct contact with water, mud, road salt, and small stones.

Thanks to its properly shaped surface, the component helps maintain proper airflow and debris management in the wheel arch, which promotes a longer service life for electronic components and reduces the risk of corrosion for mounts and wiring harnesses.

Construction and fitment for BMW 3 Series F30/F31 LCI

The cover has been designed as a part structurally compatible with the factory mounting points on the BMW 3 Series F30/F31 LCI body. The appropriate edge profile and embossments allow for a secure fit with adjacent wheel arch components and the control unit housing.

Its placement on the right side of the vehicle allows for the maintenance of the original cable routing and water drainage layout, which is important for both the durability of the electrical installation and for reducing noise and vibrations in this area.

Performance characteristics and installation

As a body and cover component, this part is prepared for installation in place of the factory cover without the need for any modifications to the vehicle's structure. In practice, this means it can be used for:

• replacing a damaged or missing mudguard flap,
• restoring factory protection for the control unit box after body repairs,
• comprehensive organization and sealing of the right-side wheel arch zone.

Proper fitment for the specific BMW 3 Series generation facilitates workshop work and reduces installation time, while maintaining the original geometry of the component promotes the correct operation of adjacent parts.

Condition and benefits of choosing a used part

The item comes from the secondary market, which allows for combining an attractive purchase cost with the preservation of the manufacturer's original specifications. In the case of wheel arch covers and control module housings, it is particularly important that the geometry and mounting method comply with the factory design – a used original part meets these requirements better than many aftermarket replacements.

If you want to learn more about the advantages of choosing components from the secondary market and dispel common doubts regarding their durability, it is worth reading the article Used car parts: myths and facts you need to know, which discusses in detail the practical aspects of using used elements in modern vehicles.

Compatibility, selection, and additional resources

When selecting a mudguard flap for the BMW 3 Series F30/F31 LCI, it is crucial to pay attention to the mounting side and compatibility with the facelift version. Verifying compatibility with the specific car configuration helps avoid installation problems and ensures proper protection of the control unit box.

For users interested in comparing design solutions used in different brands and sports versions, the technical material Audi RS vs other models – what is hidden under the hood and chassis? may be helpful, as it discusses, among other things, the differences in chassis construction and associated systems in high-performance cars.

If you are planning a comprehensive repair or upgrade of the body zone in your BMW and need other elements from the same group, such as covers, flaps, or additional module housings, check out the available parts in the Other BMW category.