BMW 3 Series E90 Saloon Rear Seat Frame Mechanism Left N/S Lock Catch 7142261

BMW 3 Series E90 Saloon Rear Seat Frame Mechanism Left N/S Lock Catch is an original component from the Seats and benches group, designed for the rear left seat section in your BMW. The precisely engineered lock mechanism ensures secure backrest locking, seat stability, and safe use of the rear passenger area.

Specifications and technical data

• SKU: 7142261
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7142261
• Substitutable numbers: 52207142261, 7142261, BG
• Location on the vehicle: Rear, Left
• Category: Seats and Sofas

Purpose and function of the BMW E90 seat lock

The presented lock is responsible for the mechanical latching of the rear left seat backrest, which is crucial for passenger safety and the stability of luggage transported behind the backrest. A properly functioning lock eliminates play, reduces unwanted backrest vibrations, and allows for correct folding and unfolding of the seat in accordance with the original BMW design.

The component is dedicated to installation in the rear part of the interior, on the left side, ensuring full compatibility with the factory mounting system and backrest guides. This solution is particularly important for post-collision repairs, replacing a damaged mechanism, or completing the interior after disassembly.

Construction and fitment for BMW

The seat lock was developed by BMW as part of the rear seat mounting system, which is why it maintains full compatibility with the original guides, catches, and backrest structure. The appropriately selected geometry of the catch and mounting points allows for installation without modifications, while maintaining factory assembly tolerances.

Original origin translates into:

• consistency with the factory backrest folding and locking system,
• proper cooperation with the left side of the rear seat,
• maintaining the backrest structural rigidity designed by the manufacturer.

Condition, origin, and benefits of choosing a used part

The offered seat lock is a used part, sourced from disassembly, which allows for combining reasonable repair costs with the preservation of original BMW quality. Such mechanical elements, when used correctly, retain their properties for a long time, making them a practical solution for restoring the full functionality of the rear seat.

Choosing an original lock from the secondary market means:

• maintaining the factory safety standard in the rear cabin,
• reliable fitment to the seat and bench structure,
• reducing the risk of backrest closing issues compared to replacements of uncertain origin.

Comfort of use and rear seat safety

A functional lock for the rear left seat section affects not only safety but also the daily comfort of using the interior. A stably latched backrest:

• eliminates knocks and rattles coming from the rear of the vehicle,
• ensures predictable backrest behavior during braking and driving over bumps,
• facilitates folding the seat when transporting longer items.

Thanks to this, BMW 3 Series E90 Saloon Rear Seat Frame Mechanism Left N/S Lock Catch is an important element for comprehensive regeneration of the rear seating area and restoring factory acoustic comfort in the interior.

Expansion and modernization of the BMW interior – seats and benches

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 backrests, cushions, or guides, check the available parts in the BMW Seats and benches category.

If you are considering a wider interior transformation – replacing seats, improving side support, or increasing comfort on long journeys – it is worth checking out the guide on our blog: Interior transformation: How branded seats from disassembly will drastically improve comfort and increase the value of your car. You will find practical tips there regarding the selection of used seats and completing interior equipment from recycling.