BMW F20 F21 F30 F31 Front Seat Lordosis Lumbar Pump Control Unit Module 7284012

BMW F20 F21 F30 F31 Front Seat Lordosis Lumbar Pump Control Unit Module is an original seat adjustment system component, responsible for the precise inflation of lumbar support chambers. Thanks to this pump, the lumbar support system operates stably, providing the driver and front passenger with a more comfortable and ergonomic driving position. It is a practical solution for those who want to restore full seat functionality in their BMW and ensure comfort during long journeys.

Specifications and technical data

• SKU: 7284012-4
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7284012
• Substitutable numbers: 52107284012, 7284012
• Location on the vehicle: Front
• Category: Seats and Sofas

Purpose and function of the lumbar support pump

The presented pump works with the lumbar support adjustment system in the front seats, responsible for generating pressure in the cushions located in the backrest. This allows for:

• precise adjustment of the backrest shape to the curvature of the spine,
• increased stabilization of the lumbar region while driving,
• improved seating comfort during daily vehicle use.

Thanks to a functional pump, the lumbar support system reacts predictably to adjustments, which translates into a more comfortable and controlled seat setting.

Application in BMW F-series models

The pump is designed for installation in the front interior of the vehicle, within the driver or passenger seat, in selected BMW F-series models. This solution is used in compact and mid-size cars where the manufacturer has provided an advanced seat adjustment system, including lumbar support adjustment.

This element is part of the factory equipment from the Seats and benches group, which guarantees structural consistency with other seat components and proper cooperation with the vehicle's electrical system.

Component characteristics and installation

The lumbar support pump operates in a system with air hoses and chambers in the seat backrest, ensuring the appropriate pressure level depending on the selected setting. The design is intended for installation within the seat structure, making the component invisible to the user while remaining easily accessible for service after removing the upholstery.

When replacing, it is worth paying attention to:

• proper connection to the existing seat wiring,
• air hose tightness,
• careful routing of harnesses and hoses inside the seat structure.

Such an approach allows for maintaining stable operation of the lumbar support system and reducing the risk of further service intervention.

Condition of the component and benefits of choosing a used part

The offered pump comes from dismantling and has the status of a used original BMW component. In practice, this means maintaining factory geometry, compatibility with the vehicle's installation, and consistency with other seat components. Choosing an original used part is a reasonable compromise between cost and quality, especially in the case of elements hidden inside the seat, where correct operation is key rather than the visual aspect.

For many users, this is an effective way to restore full seat functionality without the need to invest in a complete new seat module.

Expansion and modernization of the BMW seating area

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 the available parts in the BMW Seats and benches category.

If you want to better plan your interior modernization, choose the right seats, steering wheel, or multimedia from the secondary market, and understand what to look for when buying and installing, check out our guide: Premium interior for half the price: second-hand seats, steering wheels, and multimedia.