Underfloor Panel BMW G20 G21 Underbody Trim Panelling Rear Right O/S 7428198

Visual condition of the part

The product shows signs of use visible in the photos.

Underfloor Panel BMW G20 G21 Underbody Trim Panelling Rear Right O/S is an original body component from the Mudflaps group, designed to protect the rear right section of the underbody in 3 Series G20/G21 models. It provides stable coverage for critical areas of the chassis against water, mud, and minor mechanical damage, which helps maintain proper aerodynamics and keeps components clean.

Specifications and technical data

• SKU: 7428198
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7428198
• Substitutable numbers: 7428198, 51757428198
• Location on the vehicle: Rear, Right
• Category: Splash Guards & Mud Flaps

Purpose and function of the component

The underbody panel mounted on the rear right side is responsible for directing debris away from under the wheel and limiting direct contact of components with water and road salt. In practice, this translates into:

• reduced risk of corrosion for suspension and body components in the rear area of the vehicle,
• better protection for electrical harnesses and mounts located nearby,
• more orderly airflow under the car while driving.

Thanks to its tailored geometry, the panel works in harmony with the factory shape of the body, allowing for the maintenance of the vehicle's structural and aesthetic integrity.

Construction, fitment, and installation

The component has been designed specifically for the BMW 3 Series G20/G21 platform, taking into account its specific placement on the vehicle – rear, right side. This means precise alignment with factory mounting points and no need for modifications during installation.

• dedicated shape matched to the underbody lines,
• holes and clips prepared for original fasteners,
• construction optimized for operation in the rear wheel zone.

Such a solution facilitates service work and shortens the replacement time for a damaged panel following a collision or wear and tear.

Characteristics of the used OEM component

The offered panel is an original BMW component in used condition, which in practice means it retains its factory geometry and compatibility with the body. Unlike many aftermarket replacements, the OEM part ensures:

• consistency with other underbody panels and shields,
• predictable behavior during operation,
• easier identification and selection based on vehicle data.

For users who want to restore their vehicle to a configuration close to factory specifications, choosing an original underbody panel is a technically safe and economically justified solution.

Use in post-accident repairs

Underbody panels and components from the Mudflaps group are often damaged in collisions, by hitting obstacles, or during intensive use in difficult road conditions. Replacing them with a used OEM part allows for reduced repair costs while maintaining a high level of fitment. If you want to better understand when it is worth choosing original used body parts instead of replacements, check out the article on choosing used body parts for post-accident repairs.

Extending underbody protection in the BMW 3 Series

If you are planning a comprehensive repair or upgrade of the wheel arch and rear underbody area in your BMW and need other components from the same group, such as additional shields, protective panels, or mudflaps in other configurations, check out the available parts in the BMW Mudflaps category.