BMW E90 E91 M Sport Bottom Front Right O/S Wheel Arch Housing Cover 8040102

The BMW E90 E91 Front Right Wheel Arch Liner is a precisely fitted body component designed to protect the front right wheel of BMW 3 Series E90/E91 vehicles. The liner stabilizes airflow within the wheel arch, limits the ingress of dirt into the wheel well, and supports the proper functioning of suspension and braking system components.

Specifications and technical data

• SKU: 8040102-6
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8040102
• Substitutable numbers: 51718040102, 8040102, 51714789192, 4789192
• Location on the vehicle: Front, Right
• Category: Splash Guards & Mud Flaps

Purpose and Function of the Wheel Arch Liner

The presented liner is designed for installation in the front – right side area, where it is responsible for separating the wheel from the bodywork and engine bay. Thanks to its proper profile, the wheel arch liner directs water, mud, and small stones away from sensitive components, reducing the risk of corrosion and accelerated wear of cables, mountings, and accessories.

This part belongs to the Mudguards category, serving as a protective barrier for the body and undercarriage during daily use, especially on roads with poorer surface quality.

Construction and Fit for BMW E90/E91

The geometry of the wheel arch liner has been developed for factory mounting in the 3 Series E90/E91, allowing for proper clearances between the tire, shock absorber, bodywork, and bumper. Appropriately shaped edges work with the original mounting points, facilitating installation and subsequent service removal.

The wheel liner is prepared for operation in typical road conditions, ensuring stability even during frequent wheel turns and full suspension travel. The design also contributes to maintaining cleanliness in the wheel arch, making periodic inspections and checks of mechanical components easier.

Condition and Benefits of Using a Used Part

The offered wheel arch liner is a used original part, meaning its proper shape, mounting points, and compatibility with factory BMW solutions are preserved. Choosing such a component allows for economical repair while maintaining compliance with the vehicle's construction.

Using this wheel liner helps to limit the contact of water and dirt with suspension components, which can translate to more stable operating conditions for the drivetrain and easier maintenance of the vehicle in good technical condition.

Installation and Operational Tips

When installing the wheel arch liner, it is recommended to:

• check the condition of all mounting points in the bodywork,
• inspect for any mechanical damage to the wheel arch and bumper area,
• clean the contact surfaces of mud and debris before installation,
• verify free wheel rotation after the liner is installed.

This approach facilitates proper seating of the part and helps to avoid unwanted noises or rubbing while driving.

Expanding Wheel Area Protection in BMW

If you are planning a comprehensive repair or upgrade of the wheel area in your BMW and need other parts from the same category, such as additional liners, mudguards, or supplementary protective panels, check the available parts in the BMW Mudguards category.

More Technical Knowledge

For drivers interested in deepening their knowledge of diagnostics and operation of modern drivetrain systems, materials concerning engine accessory operation, including fuel systems, may be useful. In this context, it is worth reading the article Diesel Injector Faults – How to Recognize Them and What Neglecting Them Entails, which discusses symptoms, consequences, and basic diagnostics of injectors.