BMW 3 series E91 E92 LCI Battery Cover Lateral Trunk Floor Trim Panel 6972721

The BMW E91 Trunk Battery Styrofoam Housing is an original trunk equipment component, designed by BMW for the safe and stable placement of the battery. The styrofoam construction ensures effective separation of the battery from the rest of the trunk space, improving organization and protection of elements in the rear of the vehicle.

Specifications and technical data

• SKU: 6972721
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6972721
• Substitutable numbers: 51476972721, 6972721
• Category: Other Exterior Parts & Accessories

Purpose and Function of the Battery Housing

The presented BMW E91 trunk battery housing serves as a dedicated insert that stabilizes the battery in its designated location and limits its movement during driving. The styrofoam construction acts as a precisely fitted mold that:

• maintains the battery in a fixed position within the trunk space,
• creates an organized mounting zone,
• separates the battery from other items carried in the trunk.

This solution reduces the risk of mechanical damage and improves the overall ergonomics of using the trunk in the E91 model.

Construction of the BMW Styrofoam Housing

The element is made of molded styrofoam with appropriately selected density, allowing for a favorable compromise between rigidity and vibration damping capability. The shape of the housing is adapted to the geometry of the trunk recess in the BMW 3 Series E91, ensuring that:

• contact surfaces adhere to the body at planned points,
• the battery space has defined contours,
• it is easier to maintain order around the service recess.

The styrofoam structure is resistant to typical operational loads in the trunk, while being lightweight, which does not significantly affect the vehicle's weight.

Benefits of Using the Original BMW Housing

Using the factory battery housing in the BMW E91 trunk offers a range of practical user benefits:

• Stable Battery Mounting – limits movement during acceleration, braking, and cornering.
• Improved Trunk Space Organization – a clearly defined service zone in the rear of the car.
• Protection of Trunk Contents – reduced risk of the battery coming into contact with other items carried in the trunk.
• Maintains compliance with BMW's original design concept – shape and mounting method adapted to the E91 body.

The original component from the Other category allows for maintaining the consistency of technical solutions applied by the manufacturer, which is important both from an operational and subsequent service perspective.

Product Condition and Practical Application

The housing is offered as a used part, meaning it comes from a dismantled vehicle but retains its functional properties. Such elements are particularly useful in situations where:

• the original housing has suffered mechanical damage,
• the factory insert is missing after previous trunk modifications,
• it is necessary to restore the original battery compartment configuration.

Thanks to the preservation of the original mounting geometry, installation is predictable, without the need for modifications or fitting universal replacements.

Related Products and Technical Knowledge

If you are looking for other elements from the BMW Other category to complement your car's equipment, check out our offer for other BMW equipment, where you will find a wide selection of original dismantled components.

If you are interested in comparing technical solutions used by different manufacturers, including advanced sports models, it is worth reading the article describing the structural differences in powertrains and chassis: Audi RS vs. Other Models – What's Under the Hood and Chassis?. This is a good addition to the knowledge for those who pay attention to construction details and the quality of components used.