BMW 3 Series E90 E91 Underfloor Under Body Floor Coating Cover M Sport 7070141

BMW 3 Series E90 E91 Underfloor Under Body Floor Coating Cover M Sport is a body component designed for the rear undercarriage, which helps protect the filter zone and adjacent components from dirt and operational damage. Thanks to a design consistent with BMW solutions, it ensures a proper fit to the chassis and stable mounting, which translates into predictable vehicle behavior during daily driving.

Specifications and technical data

• SKU: 7070141-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7070141
• Substitutable numbers: 51717070141, 7070141, 51757181652, 7181652
• Location on the vehicle: Rear
• Category: Splash Guards & Mud Flaps

Purpose and function of the cover

The filter cover in the form of an underbody plate in BMW 3 Series E90/E91 models is responsible for limiting direct contact of the rear undercarriage components with water, mud, road salt, and small stones. The use of a dedicated plate in this area:

• reduces the risk of accelerated corrosion of mounting and structural elements,
• stabilizes airflow under the car,
• makes it easier to keep the undercarriage clean, which facilitates maintenance.

Due to its proper profile, the cover works with the factory undercarriage geometry without interfering with the operation of the suspension or the exhaust system.

Compatibility with BMW E90 and E91

The BMW 3 Series E90 E91 Underfloor Under Body Floor Coating Cover M Sport has been designed for the sedan and touring versions of the 3 Series E90/E91 generation, taking into account the characteristic mounting layout in the rear of the vehicle. The appropriate placement of mounting points allows for:

• installation in existing mounting holes without structural modifications,
• maintaining proper connection rigidity with the body,
• correct adhesion to adjacent underbody cover elements.

Such a fit limits the formation of unwanted vibrations and noise, which is important for acoustic comfort inside the cabin.

Characteristics of the used component

The presented underbody plate is a used part, sourced from dismantling, which allows for maintaining compliance with the original BMW specification while reducing repair costs. This type of element is particularly useful when:

• the existing cover has suffered mechanical damage (e.g., due to contact with an obstacle),
• it is missing after previous bodywork or service repairs,
• it is necessary to restore the completeness of the undercarriage to a state close to factory condition.

Using an original construction from the secondary market promotes the technical consistency of the vehicle, without the need to adapt replacements with uncertain geometry.

Importance of a proper rear underbody cover

A properly selected rear underbody cover affects not only the protection of the filter and surrounding components but also the long-term durability of bolted connections, brackets, and suspension elements located in its vicinity. Proper protection of this area:

• limits the ingress of contaminants around critical structural points,
• facilitates subsequent service work due to a lower degree of soiling,
• helps maintain the aerodynamic consistency of the lower part of the body.

For users operating the car in urban and extra-urban conditions, with frequent contact with water and mud, a complete underbody plate constitutes a practical addition to body protection.

Extended protection – BMW Mud Flaps

If you are planning a comprehensive repair or upgrade of the wheel arch zone and the lower part of the body in your BMW and need other elements from the same group, such as additional covers, wheel arch mud flaps, or supplementary protective plates, check the available parts in the BMW Mud Flaps category.

Technical knowledge and vehicle operation

When working on the undercarriage, covers, and components mounted in the rear of the body, it is also worth paying attention to the condition of cooperating systems, such as the suspension or drivetrain. For drivers interested in a broader perspective on the operation and selection of components from the secondary market, a guide on choosing and evaluating used drivetrain components – especially gearboxes – may be useful. More practical information can be found in the article Manual, automatic, or DSG gearbox – common faults and a guide to buying a used gearbox.