BMW E81 E87 E90 E92 Seat Lumbar Support Front Seat Lordosis Pad Pump 7138788

The BMW E81 E87 E90 E92 Front Seat Lumbar Support Pump is a backrest adjustment system component designed for installation in the front seat of selected BMW 1 and 3 Series models. By using a genuine part from the Seats and benches group, you restore the proper function of lumbar support and improve the ergonomics of the driver's or passenger's seat.

Specifications and technical data

• SKU: 7138788-5
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7138788
• Substitutable numbers: 52107138788, 7138788
• Location on the vehicle: Front
• Category: Seats and Sofas

Purpose and Function in the Seat System

The presented lumbar support pump operates within the front seat area, responsible for regulating the inflation of the lumbar support chamber in the backrest. This component works in conjunction with the seat control system, allowing for precise adjustment of the backrest shape to the user's physique, which reduces spinal fatigue during longer drives.

As an original part used in BMW seats, the pump is structurally matched to the factory lumbar support system, ensuring consistent operation of the entire seat adjustment system.

Benefits of Using an Original Lumbar Support Pump

Using a dedicated pump in the BMW front seat offers a number of practical advantages:

• restoration of full functionality of the lumbar support adjustment in the seat backrest,
• increased driving comfort due to better support for the lumbar region,
• preservation of factory interior ergonomics and driving position,
• compatibility with the original seat system without the need for installation modifications.

For users who drive frequently or undertake long journeys, a functional lumbar support system is a crucial element contributing to comfort and back stabilization while driving.

Installation Characteristics and Seat Integration

The pump is designed for installation in the front cabin area, within the driver's or passenger's seat, according to the factory BMW layout. This solution is designed to work with the existing seat wiring, facilitating service and replacement of a damaged component within the same seat generation.

Its placement in the front seat area allows for direct user operation via the standard seat controls, without interfering with other vehicle systems. Consequently, pump replacement is a typical service operation within the seat system, rather than an interior structural modification.

Component Condition and Practical Application

The offered lumbar support pump is from the group of used parts, allowing for an economical repair of the seat system while maintaining the original BMW construction. This type of solution is particularly beneficial for comprehensive interior restoration when you want to preserve the factory character of the seats and their adjustment functions.

The component is suitable as a replacement for a damaged pump in a daily driven car, as well as during phased interior refurbishment projects where functionality and compliance with factory equipment are a priority.

BMW Seat Area Expansion and Modernization

If you are planning a comprehensive repair or modernization of the seat area in your BMW and need other parts from the same group, such as adjustment mechanisms, frames, or complete seat bases, check the available parts in the BMW Seats and benches category.

If you wish to plan a broader cabin refresh and combine lumbar support system repair with the replacement of other equipment elements, you can find practical tips on selecting used seats, steering wheels, and multimedia systems in the article Premium Interior for Half the Price: Used Seats, Steering Wheels, and Multimedia.