BMW 1 Series E88 Footwell Foam Inserts Rear 9177837

BMW 1 Series E88 Footwell Foam Inserts Rear are original interior equipment components designed specifically for convertible models. Thanks to their precise fit to the rear floor section, they provide stable support for the upholstery, reduce road noise, and improve insulation from the floor. This is a practical solution for users who want to maintain the factory interior construction and improve comfort for rear passengers.

Specifications and technical data

• SKU: 9177837
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9177837
• Substitutable numbers: 51479177837, 9177837
• Location on the vehicle: Rear
• Category: Other Interior Parts & Accessories

Purpose and function in the BMW 1 Series E88

The presented foam floor inserts are intended for installation in the rear cabin area of the BMW 1 Series E88. This component acts as a spacer and sound-deadening layer between the floor panel and the upholstery, which helps in:

• reducing vibrations transmitted from the suspension to the interior,
• limiting noise from the rear axle and wheel arches,
• maintaining the correct shape and support of the floor carpet,
• protecting the upholstery against localized compression and wear.

Thanks to factory profiling, the inserts work with the original mounts and floor geometry, which facilitates installation and ensures a consistent effect after any service intervention.

Construction and material properties

The inserts are made of molded technical foam with a selected density that combines resilience with resistance to deformation. The material structure has been designed to:

• dampen high-frequency vibrations originating from the suspension and wheels,
• provide stable support for the rear floor carpet,
• operate within typical temperature ranges occurring in the vehicle cabin.

The original origin of the component means that the foam geometry is consistent with BMW's factory specifications, which translates into proper adhesion to the floor and no need for additional adjustments.

Benefits of using original foam inserts

Using dedicated inserts in the rear interior of the BMW 1 Series E88 provides a number of practical operational benefits:

• Better acoustic comfort – reduced noise transmission from the rear axle and road into the cabin.
• Stable carpet positioning – lower risk of the upholstery wrinkling or shifting under passengers' feet.
• Protection of interior construction – even distribution of pressure on the floor and sub-upholstery elements.
• Consistency with factory construction – maintaining the original insulation and soundproofing concept applied by the manufacturer.

This solution is particularly useful during interior service work, after removing the upholstery, or when restoring the car to a factory-like condition.

Condition of the component and service application

The offered foam inserts are removed from a vehicle and are intended for reinstallation in the rear cabin area. Such components are often overlooked during repairs; however, their absence or improper fit can result in increased noise, poor carpet support, and a less stable feel under passengers' feet.

Choosing the original floor foam allows for maintaining the structural integrity of the interior, which is important both for daily use and for more advanced restoration work or preparing the car for sale.

If you are planning a comprehensive repair or upgrade of the rear floor area in your BMW and need other components from the same group, such as additional foam inserts, floor covers, or supplementary soundproofing elements, check the available parts in the Other BMW category.

Technical support and knowledge of vehicle construction

When selecting soundproofing and interior equipment components, knowledge of the structural differences between individual model versions and their sports variants can be helpful. In this context, it is worth reading the material describing the characteristics of drivetrains and chassis in high-performance cars – you will find it in the article Audi RS vs other models – what is hidden under the hood and chassis?, which organizes knowledge about the construction and operation of cars with diverse specifications.