BMW E90 E91 M Sport Bottom Front Right O/S Wheel Arch Housing Cover 7903910

Visual condition of the part 

The product shows signs of use visible in the photos. 

BMW E90 E91 M Sport Bottom Front Right O/S Wheel Arch Housing Cover is an original body component from the Mudflaps group, designed for installation in the front right section of the vehicle. Engineered for the M Sport package version, it ensures proper airflow and protects the wheel arch from water and debris. It is a practical solution for users who want to maintain the factory body geometry and stable operating conditions for suspension components.

Specifications and technical data

• SKU: 7903910-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7903910
• Substitutable numbers: 51717903910, 7903910
• Location on the vehicle: Front, Right
• Category: Splash Guards & Mud Flaps

Purpose and compatibility for BMW E90 / E91

The presented wheel arch cover has been developed specifically for BMW 3 Series E90 and E91 models equipped with the M Sport package, intended for the front right side. The appropriate surface shaping allows for the proper drainage of water and mud from the wheel area, which reduces the risk of accelerated corrosion of metal parts and dirt accumulation in the wheel arch housing.

Thanks to a design consistent with factory BMW standards, the wheel arch cover works with original mounting points, which facilitates installation and allows for consistency with other body panels. This is particularly important for cars with the M Sport package, where the geometry of the bumper and side skirts differs from standard versions.

Protective function and benefits of installation

The wheel arch cover performs several key operational functions that affect the durability and comfort of using the vehicle:

• limits direct contact of water, salt, and stones with suspension and body components,
• stabilizes airflow around the wheel, which promotes even dispersion of debris,
• reduces noise generated by the wheels, improving cabin acoustics,
• protects electrical harnesses and mounts located in the wheel arch zone.

Replacing a damaged or missing wheel arch cover with a functional part helps restore proper operating conditions in this part of the body and reduces the risk of costly repairs resulting from long-term moisture exposure.

Characteristics of the used component

The offered wheel arch cover is a used part, meaning it comes from vehicle dismantling and may show signs of normal wear. This type of part is a good choice for users looking for a solution consistent with the original BMW specification while maintaining a reasonable budget. A used component with preserved mounting geometry allows for proper fitment to the body without the need for additional modifications.

In practice, installing such a wheel arch cover enables the restoration of full protective functionality in the wheel zone, which is especially important in cars used year-round in varied road conditions.

Installation zone – front, right side

The location on the vehicle defined as front, right side clearly indicates that the element is intended for installation on the passenger side of the front axle. Such designation facilitates the selection of the correct part during post-accident repairs or when replacing worn body components.

Precise fitment to this specific body zone is important for:

• correct alignment of the wheel arch edge relative to the bumper and fender,
• stable mounting in factory points,
• maintaining the appropriate distance from the tire at various steering angles.

Integration with other BMW Mudflaps components

If you are planning a comprehensive repair or upgrade of the wheel arch zone in your BMW and need other components from the same group, such as covers, extensions, or additional protective panels, check the available parts in the BMW Mudflaps category.

Additional technical and operational information

When selecting a wheel arch cover for a BMW 3 Series E90/E91 with the M Sport package, it is worth paying attention to the compatibility of the body version and the installation zone. Using an element intended for the correct side of the vehicle avoids installation problems and ensures proper adhesion to the bumper and fender.

For users interested in the broader context of vehicle operation, including the impact of engine operating temperature on component durability, the article describing issues related to the cooling system and engine overheating may be helpful, available here: Engine cooling system – overheating, repair, and used radiators.