BMW X1 U11 iX1 U12 Automatic Tailgate Lift Support Strut 5B4FCB5

BMW X1 U11 iX1 U12 Automatic Tailgate Lift Support Strut is an original component from the Gas springs, locks, hinges and other parts group, designed for use in modern BMW X1 U11 and iX1 U12 models. It ensures precise, controlled opening and closing of the tailgate in vehicles equipped with an automatic transmission, supporting daily operational comfort and the functionality of the rear body section.

Specifications and technical data

• SKU: 5B4FCB5
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 5B4FCB5
• Substitutable numbers: 5B4FCB5, 51245B4FCB5, 9450475, 51249450475
• Location on the vehicle: Right
• Gearbox type: Automatic
• Category: Lift Supports, Latches, Hinges & Additional Parts

Purpose and function in the vehicle

The automatic tailgate lift support strut in the BMW X1 U11 and iX1 U12 is responsible for stable guidance and assisting the movement of the tailgate on the right side. This component works in conjunction with the hinge and lock system, ensuring smooth opening and secure closing of the trunk lid, which is particularly important in vehicles with an electrically operated tailgate.

Thanks to appropriately selected mechanical parameters and operating characteristics, the strut maintains the tailgate in the desired position, minimizing the loads transferred to the hinges and the body structure. Proper operation of this sub-assembly affects the comfort of using the trunk, loading ergonomics, and the protection of the rear vehicle trim elements.

Construction and fitment for BMW X1 U11 / iX1 U12

The strut has been designed as a component dedicated to the specific generation of the BMW X1 U11 and iX1 U12, which translates into the correct working length, stroke, and mounting points. The appropriate geometry of the right-side mounts allows for correct cooperation with the factory brackets in the body and tailgate, without the need for modifications or adaptations.

As a part from the Gas springs, locks, hinges and other parts group, the strut interacts with other elements of the tailgate mechanism, creating a coherent system responsible for the stability, tightness, and repeatability of the rear lid's operation. Using an original solution limits the risk of improper closing, excessive play, or accelerated wear of the hinges.

Integration with vehicles with automatic transmission

In BMW X1 U11 and iX1 U12 models equipped with an automatic transmission, vehicle comfort is particularly important, and the automatic tailgate lift support strut is an important element of this experience. A properly functioning tailgate mechanism facilitates trunk operation in daily city traffic, while parking, or during loading, when the driver uses the automatic drive control function and expects consistent, predictable operation of all systems.

The stable operation of the strut reduces the need for force when opening and closing the tailgate, which is particularly noticeable during frequent use of the cargo space, e.g., in family or business applications.

Characteristics of the used component

The offered strut is a used component, which allows for an economical replacement of the sub-assembly while maintaining the original installation specification. Choosing such a solution is beneficial in situations where the priority is to maintain factory fitment and compatibility with the existing tailgate system, while simultaneously optimizing service costs.

A used OEM component is a good solution for users who want to restore the proper operation of the tailgate mechanism without giving up the original design and operating parameters provided by the vehicle manufacturer.

Part selection by OEM numbers and technical support

When selecting an automatic tailgate lift support strut for a BMW X1 U11 or iX1 U12, it is crucial to verify compatibility by OEM number and interchangeable numbers. This allows avoiding installation problems and ensures correct cooperation with other elements of the tailgate mechanism. In case of doubt, it is worth referring to service documentation or consulting a mechanic specializing in the BMW brand.

Additional tips on selecting used OEM parts by numbers and identification by VIN can be found in an article describing the specifics of Audi units and a practical approach to component selection: Audi's five-cylinder engine – a legend from Quattro to RS3 and how to take care of it using original Audi parts.

Repair economics and the use of used parts

Replacing the tailgate lift support strut with a used component allows for significantly reducing service costs while maintaining functionality close to factory standards. This solution is particularly attractive for post-accident repairs or intensive vehicle use, when it is necessary to replace several elements of the rear body section simultaneously.

More information on how to rationally use the used parts market and where such a solution is most cost-effective can be found in the guide: Rising repair costs and the boom in used parts – how to save on car service?.

Related elements from the same group

If you are planning a comprehensive repair or upgrade of the rear and cargo area in your BMW and need other elements from the same group, such as additional gas springs, tailgate locks, or lid hinges, check the available parts in the BMW gas springs, locks, hinges and other parts category.