BMW E87 E90 E91 Front Seat Lordosis Pad Lumbar Bag Back Support Pump 7140555

Visual condition of the part

The product shows signs of use visible in the photos.

BMW E87 E90 E91 Front Seat Lordosis Pad Lumbar Bag Back Support Pump is a specialized component of the lumbar support system in the front seat, designed for BMW 1 and 3 series models. It allows for precise adjustment of the lumbar support, improving seat ergonomics and comfort during long drives. Thanks to the use of an original design, the seat maintains proper geometry and compatibility with factory controls.

Specifications and technical data

• SKU: 7140555-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7140555
• Substitutable numbers: 7140555, 52107140555
• Location on the vehicle: Front
• Category: Seats and Sofas

Function and application in the driver or passenger seat

The lumbar support pad with pump is responsible for active adjustment of spinal support in the front part of the cabin. This component works with the seat structure, enabling:

• changing the shape of the backrest in the lumbar region,
• adjusting the firmness of the support to the user's preferences,
• stabilizing the posture during highway and city driving.

Placement in the Front zone means integration with the driver or passenger seat, which allows for improved comfort for those who spend the most time behind the wheel.

Construction and technical characteristics

The lumbar pad integrated with the pump creates a compact system that can be incorporated into the existing seat installation. This solution is designed with the following in mind:

• consistency with the backrest structure in BMW E87, E90, and E91 models,
• proper distribution of forces in the lumbar region,
• stable operation under typical vehicle interior usage conditions.

By maintaining the factory seat geometry, the installation of this pad allows for maintaining ergonomic back positioning without interfering with the seat structure or upholstery beyond the necessary scope.

Benefits of use in BMW 1 and 3 series

The use of this component in the front seat brings measurable practical benefits, especially in cars used on longer routes:

• increased comfort in the lumbar region, reducing back fatigue,
• better fit of the seat to the driver's or passenger's silhouette,
• maintaining a consistent look and functionality of the BMW interior.

The product from the Seats and benches category allows for restoring or expanding the adjustable lumbar support function, which is particularly important when upgrading the interior or replacing worn-out components.

Condition, fitment, and practical application

The item is offered as a used original component, which in practice means maintaining proper fitment to the BMW seat structure and compatibility with factory mounting solutions. This is a good solution both for repairing an existing support system and for adding lumbar functionality to a seat that did not have it before (within the scope of compatibility with a given vehicle configuration).

If you are planning a comprehensive repair or upgrade of the seating area in your BMW and need other components from the same group, such as frames, seat cushions, or backrests, check the available parts in the BMW Seats and benches category.

Tuning and interior modernization of BMW

The lumbar pad with pump fits well into projects aimed at functional interior tuning – improving comfort without interfering with the styling characteristic of BMW. It can be part of a broader seat modernization, including upholstery replacement, changing seat profiles, or retrofitting additional adjustments.

If you are considering a wider cabin rebuild and want to better plan the scope of work, it is worth checking out the guide on selecting seats and steering wheels from the secondary market: Car interior tuning with Global Parts. For those interested in a broader modification project using used components, the material on common mistakes when buying parts may also be helpful: Buying used car parts for tuning.