Lumbar Pump BMW E87 E90 E92 F25 Front Seat Lordosis Control Unit Module 7138786

Lumbar Pump BMW E87 E90 E92 F25 Front Seat Lordosis Control Unit Module is an original front seat lumbar support control module designed for selected BMW models. This component is responsible for the precise operation of the lumbar pump, which directly affects seating comfort and ergonomics while driving, especially on longer journeys.

Specifications and technical data

• SKU: 7138786-2
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7138786
• Substitutable numbers: 52107138786, 7138786, KZ
• Location on the vehicle: Front
• Category: Seats and Sofas

Purpose and function of the module

The presented lordosis control module is a component of the lumbar support adjustment system in BMW front seats. It is responsible for controlling the operation of the lumbar pump, which changes the shape of the backrest in the lumbar region, adjusting it to the driver's or passenger's physique. This allows for stable back support, which reduces muscle fatigue and improves overall driving comfort.

The placement of the module in the front seat area allows for quick response to signals from the adjustment buttons and ensures consistent operation of the entire backrest adjustment system. This solution is particularly appreciated in vehicles used intensively, where seating comfort and ergonomics are crucial for daily operation.

Benefits of using an original BMW module

Using an original lumbar support control module in a BMW front seat translates into:

• maintaining the factory functionality of the lordosis adjustment in the driver's or passenger's seat,
• proper cooperation with the vehicle's electrical system and other seat components,
• consistent operation with factory control buttons in the seat console,
• maintaining seating comfort at the level intended by the manufacturer.

The module from this group is particularly useful when replacing a seat with a version featuring lumbar adjustment, repairing a faulty pump system, or restoring full interior functionality after previous modifications. Choosing an original solution avoids fitment issues and ensures predictable system performance.

Product condition and practical application

The offered item comes from dismantling and is marked as used, which makes it an attractive cost-effective alternative to new components while maintaining the manufacturer's original specifications. This type of module is popular among both workshops specializing in the BMW brand and users independently upgrading their car's interior.

In practice, installation involves connecting the module in place of the factory controller in the front seat, using the existing wiring harness. After proper connection, the lumbar support system regains its function, and the user regains the ability to adjust the shape of the backrest in the lumbar region.

Application in the BMW Seats and Benches category

The lumbar support control module is part of a group of components responsible for comfort and adjustment in the Seats and Benches category in BMW cars. If you are planning a comprehensive repair or upgrade of the seating area in your BMW and need other elements from the same group, such as seat frames, adjustment mechanisms, or additional control modules, check the available parts in the BMW Seats and Benches category.

Comfort and car value – how to use the module in interior upgrades

Replacing or adding a lumbar support control module often accompanies the installation of seats from a higher trim level. During such an upgrade, it is worth paying attention to the consistency of the entire set of seats, upholstery, and electronics to achieve a noticeable improvement in comfort and interior aesthetics. If you are considering installing branded seats from dismantling and want to better understand how they affect comfort and vehicle value, check out the article Interior metamorphosis: How branded seats from dismantling will drastically improve comfort and increase the value of your car.

When choosing a used control module, many drivers compare original, replacement, and aftermarket solutions. To better evaluate the profitability of such an investment in terms of quality, fitment, and costs, the guide Original, replacement, or used – which car parts are the most cost-effective? may be helpful, where you will find practical tips on selecting parts for your car.