Description
The BMW X5 E70 Styrofoam Sound Deadening for Rear Seat is an original sound-insulating element designed for the rear interior, specifically for BMW models. Precisely molded styrofoam stabilizes the rear seat structure, improves cabin acoustics, and reduces vibration transfer from the body.
Specifications and technical data
- SKU: 7170838-2
- Mark: BMW (Genuine OE)
- Condition: Used
- OEM Part Number: 7170838
- Substitutable numbers: 52207170838, 7170838, EM
- Location on the vehicle: Rear
- Category: Seats and Sofas
Purpose and Function in the Vehicle
This sound-deadening foam operates in the rear seat area, within the luggage and passenger zone. Its purpose is to:
- dampen noise originating from the rear of the body,
- reduce resonances and vibrations within the seat structure,
- supplement the factory acoustic insulation of the interior,
- stabilize upholstery and trim elements of the rear seat.
Thanks to its precise fit for the specific body model, the foam creates a cohesive acoustic barrier, resulting in a more comfortable suspension feel inside the cabin and more pleasant interior acoustics while driving.
Construction and Fit for BMW X5 E70
The element is made from molded styrofoam with appropriately selected density, allowing it to combine sound-deadening with spacing and support functions. The foam’s shape is precisely matched to the geometry of the rear floor and seat structure in the BMW X5 E70, ensuring that:
- factory support points and contours are maintained,
- the element works with original mountings and upholstery,
- no modifications or forced adjustments are required.
This solution helps maintain the structural integrity of the rear seat and minimizes the risk of unwanted creaks or looseness during operation.
Benefits of Using Original Sound Deadening Foam
The application of dedicated styrofoam foam in the rear interior of the BMW X5 E70 offers a range of practical benefits:
- more comfortable acoustic conditions in the cabin at higher speeds,
- better isolation of passengers from the operation of the suspension and tires,
- maintenance of the factory finish standard for the rear seat area,
- easier installation and removal of upholstery elements during servicing.
For users who care about the interior’s condition, it’s important that the original sound-deadening foam helps preserve the car’s original character, which is significant for both driving comfort and the perceived value of the vehicle.
Condition, Origin, and Practical Application
The offered element is from a dismantled vehicle, meaning it is a used part but retains its manufacturer-intended functionality. Such components are often chosen for:
- post-accident repairs of the rear body section,
- replacing missing elements after previous interior modifications,
- restoring the factory sound-deadening level after seat or upholstery replacement.
Choosing a used OEM part helps maintain the interior’s structural consistency and is a cost-effective solution compared to purchasing a new part.
More Interior Parts and Practical Knowledge
If you are planning a comprehensive repair or upgrade of the rear seat area in your BMW and need other parts from the same group, such as frames, seat cushions, or backrests, check the available parts in the BMW Seats and Benches category.
If you are considering a broader interior transformation and want to better understand how branded parts from dismantled vehicles affect driving comfort and vehicle value, read the article: Interior Makeover: How Branded Dismantled Seats Improve Comfort and Increase Car Value.
To more precisely select interior components based on manufacturer markings, a practical guide may be helpful: How to Choose the Right Car Part by OEM Number and Other Markings.






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