BMW F20 F21 F22 F30 F31 F32 Lower Belt Buckle Rear Seat Left N/S Catch 7243311

The Left Rear Seat Belt Buckle for BMW is an original mounting part designed for F-series models (including F20, F21, F22, F30, F31, F32). It is a practical solution for users who want to restore the full functionality of the rear left seat while maintaining BMW's factory safety standards.

Specifications and technical data

• SKU: 7243311
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7243311
• Substitutable numbers: 7243311, 72117243311
• Location on the vehicle: Rear, Left
• Category: Seat Belts & Parts

Purpose and Function in the Safety System

The presented left rear seat belt buckle functions as a fastening element for the seat belt buckle, responsible for securely fastening the seat belt in the rear seat. The component is tailored to the construction of rear seats in F-series body styles, ensuring correct belt routing geometry and proper positioning relative to the seat.

Its placement in the rear – left side area makes this part crucial for the safe transport of a passenger sitting on the left side of the rear bench. A correctly chosen buckle minimizes the risk of improper belt fastening and supports maintaining the correct body position while driving.

Construction and Fit for BMW F-Series

As an element from the seat belts and parts category, the buckle is designed to work with the original BMW seat belt. The construction includes:

• Precise fit for the rear left seat – conforming to the factory geometry of the seat and center console.
• Compatibility with the original belt buckle – ensuring a proper "click" and clear locking mechanism when fastened.
• Stable mounting to the body – prepared for integration with factory mounting points.

This allows for a factory-like installation without the need for structural modifications to the seat or body, which is important from both a safety perspective and in terms of compliance with the manufacturer's specifications.

Benefits of Using an Original BMW Buckle

Using an original rear left seat belt buckle offers a range of practical benefits:

• Consistency with the BMW safety system – the element works with factory belts and mounting points, contributing to predictable vehicle behavior during a collision.
• Proper user ergonomics – the correct length and angle of the buckle facilitate quick fastening and unfastening for the passenger.
• Aesthetic integration with the interior – the design and shape are consistent with the F-series interior design, maintaining a uniform look for the rear seat.
• Reduced risk of installation errors – an original part minimizes the likelihood of incorrect installation compared to aftermarket alternatives with uncertain fit.

Condition, Origin, and Practical Application

This part comes from the BMW offering and is classified as used, allowing for an economical repair of the safety system while maintaining the factory construction. This solution is particularly beneficial for:

• Collision repairs – when the buckle or its latching mechanism has been damaged.
• Replacing worn parts – in case of looseness, locking issues, or signs of excessive wear.
• Restoring interior completeness – when the original buckle is missing from the rear left side.

A used, original component helps maintain consistency with other elements of the safety system, which is important for the durability and predictable performance of the entire system.

Technical Support and Additional Information

If you need other elements from the BMW seat belts and parts category, check out our dedicated offer: BMW seat belts and parts. You will find a wide selection of components tailored to various models of this brand.

When selecting and using used safety system components, it is advisable to be aware of best practices for maintenance and installation. An article on our blog comparing classic and modern OEM designs in Mini might be helpful – you can find it here: Classic Mini vs. Modern MINI – Construction Differences and OEM Parts. Although it concerns a different brand, it effectively illustrates the importance of using original components in safety systems.

Additionally, to better care for the longevity of used disassembled parts, we encourage you to read the guide: How to Extend the Lifespan of Used Car Parts, which describes practical methods of operation and maintenance, also useful in the context of parts installed in a vehicle's interior.