BMW F20 F21 F30 F31 LCI Front Seat Lordosis Pad Lumbar Support Pump

BMW F20 F21 F30 F31 LCI Front Seat Lordosis Pad Lumbar Support Pump is a component of the lumbar support system in the front seat, designed for BMW F-series models. It allows for precise adjustment of the backrest shape to the driver's or passenger's silhouette, improving seat ergonomics and comfort during long drives. It is a practical solution for those upgrading their interior or restoring full seat functionality.

Specifications and technical data

• SKU: 7284012
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7138787
• Substitutable numbers: 52107284012, 52107243596, 7243596, 52107138787, 7138787
• Location on the vehicle: Front
• Category: Seats and Sofas

Purpose and function in the seat system

The presented pump is part of the lumbar adjustment system in BMW F-series front seats, mounted in the backrest area. It is responsible for controlling the lumbar cushion, allowing for the increase or decrease of the filling in the lower part of the backrest. This allows the user to achieve more stable spinal support, which reduces fatigue during daily vehicle use.

This type of solution is particularly valued in cars used on long routes, where precise lumbar support adjustment significantly impacts the driver's comfort and concentration. The pump works with the factory seat system, maintaining the original control logic.

Benefits of using an original BMW component

The element comes from the Seats and benches group, meaning it was designed specifically to work within the seat and backrest structure, taking into account loads and limited installation space. Using an original BMW solution allows you to maintain:

• consistency of operation with factory seat adjustment switches,
• proper fit to the backrest structure,
• compatibility with the vehicle's seat wiring.

For the user, this means no need for structural modifications and the maintenance of predictable, repeatable operation of the lumbar support system.

Installation characteristics and application

The pump is designed for installation in the front part of the cabin, within the driver's or passenger's seat, depending on the equipment configuration of the specific BMW unit. The design is prepared for operation in the enclosed space of the backrest, where compact dimensions and resistance to typical conditions inside the vehicle are important.

When selecting the component, it is worth paying attention to compatibility with the specific seat version (e.g., standard, sports, comfort) and the car's equipment. A properly selected pump allows you to restore full lumbar adjustment functionality without interfering with other seat components.

Product condition and use in interior modernization

The offered item is in used condition, making it an attractive solution for those looking for an economical repair of the seat system or a gradual modernization of the BMW interior. Replacing a faulty pump with a functional component of this type allows you to regain a function that is crucial for daily driving comfort in many vehicles.

This approach is particularly beneficial during comprehensive seat renovation, when upholstery, foams, or other structural elements of the seat and backrest are being refreshed in parallel.

Expansion and further personalization of the BMW interior

If you are planning a comprehensive repair or modernization of the seating area in your BMW and need other elements from the same group, such as frames, adjustment mechanisms, or additional comfort modules, check out the available parts in the BMW Seats and benches category.

For those who want to go a step further and build a cohesive, comfortable interior using second-hand components, we recommend the guide on our blog: Premium interior for half the price: second-hand seats, steering wheels, and multimedia. There you will find practical tips on selecting, installing, and combining various cabin equipment elements into a cohesive whole.