Underbody Panelling BMW G20 G21 Trim Panel Cover Rear Left N/S 7340867

Underbody Panelling BMW G20 G21 Trim Panel Cover Rear Left N/S is an original BMW body component designed to protect the undercarriage in the rear left area of the vehicle. This factory trim panel helps maintain proper aerodynamics, protects structural components from dirt and external factors, and, thanks to its precise fit for the specific BMW G20/G21 generation, ensures seamless installation with factory mounting points. As a used OEM component, it serves as a functional solution for accident repairs, undercarriage maintenance, or replacing missing covers.

Specifications and technical data

• SKU: 7340867
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7340867
• Substitutable numbers: 7340867, 51757340867
• Location on the vehicle: Rear, Left
• Category: Other Exterior Parts & Accessories

Purpose and vehicle placement

The presented underbody panelling is designed for installation in the rear left section of the BMW G20/G21 series body. Its geometry is matched to the factory shape of the undercarriage, which allows for:

• proper airflow guidance under the car,
• protection of structural and mounting components in the rear left zone,
• reduction of mud, water, and debris accumulation.

Thanks to its dedicated placement, the panel works in conjunction with other underbody covers to create a cohesive system protecting the lower part of the body.

Technical and functional characteristics

The Underbody Panelling BMW G20 G21 Trim Panel Cover Rear Left N/S was developed as an OEM structural element, meaning its shape, material thickness, and placement of mounting points comply with the manufacturer's factory documentation. In practice, this translates into:

• precise fitment to the body without the need for modifications,
• stable mounting in the rear left zone,
• preservation of the airflow characteristics under the car as designed by BMW.

The use of original trim panels is particularly important in vehicles where consistent driving parameters, acoustics, and protection of undercarriage components against accelerated wear are essential.

Component condition and service application

As a secondary market part, the panel is intended primarily for service applications – replacing damaged, cracked, or missing covers in the rear left zone. The used OEM component allows you to:

• restore the factory underbody configuration without resorting to aftermarket parts with uncertain fitment,
• maintain the structural and visual integrity of the lower body,
• optimize repair costs while maintaining original BMW specifications.

This solution is particularly beneficial for repairs following mechanical undercarriage damage, suspension component replacement, or restoring the completeness of covers after service disassembly.

Integration with other BMW body components

The rear left underbody panelling works with adjacent panels and covers to create a continuous protection system for the lower body. Proper installation of this component contributes to:

• limiting the ingress of water and road salt to critical structural points,
• reducing noise generated by airflow under the car,
• maintaining an aesthetic, orderly appearance of the undercarriage.

In the case of extensive undercarriage work on a BMW, it is worth paying attention to the completeness of all trim panels in the rear of the vehicle to maintain the consistency of the entire system.

If you are planning a comprehensive repair or upgrade of the undercarriage area in your BMW and need other components from the same group, such as covers, panels, or additional shields, check the available parts in the Other BMW category.

Technical support and undercarriage knowledge

When working with undercarriage components – regardless of the brand – it is worth knowing the structural differences between standard and sports versions, especially regarding covers, airflow, and mechanical protection. To deepen your knowledge of solutions used in premium class cars, you can read an article describing the construction and specifics of Audi sports models, including their undercarriage and chassis systems: Audi RS vs other models – what is hidden under the hood and the undercarriage?.