Belt Tensioner BMW X3 F25 X4 F26 Seat Lower Buckle Front Right O/S 7256646

BMW X3 F25 X4 F26 Front Right Seatbelt Pretensioner is an original safety system component designed for installation on the front right passenger side of BMW X3 F25 and BMW X4 F26 vehicles. This precisely engineered part from the Seatbelts and Parts category allows for professional repair or restoration of the full functionality of the factory safety system.

Specifications and technical data

• SKU: 7256646
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7256646
• Substitutable numbers: 72117256646, 7256646, KZ
• Location on the vehicle: Front, Right
• Category: Seat Belts & Parts

Purpose and Compatibility

The pretensioner has been specifically designed for use in BMW X3 F25 and BMW X4 F26 models, taking into account the structural requirements of the body and front seats. Its placement on the vehicle is front – right side, meaning it is designed to fit the factory seatbelt mounting point on the passenger side.

By adhering to manufacturer standards, this component works in conjunction with the vehicle's factory electronics and airbag system, which is crucial for maintaining the correct sequence of operation for passive safety systems.

Seatbelt Pretensioner Construction and Function

The seatbelt pretensioner is responsible for rapidly tightening the seatbelt webbing when a collision is detected by the airbag control unit. This limits uncontrolled passenger movement and improves interaction with the airbags and seat structure.

• Precise Fit for Front Seat – construction prepared for installation at the factory mounting point on the right side.
• SRS System Compatibility – the pretensioner is a component of the passive safety system, integrated with collision sensors and the airbag control unit.
• Controlled Operation – activation occurs only under specific collision conditions, in accordance with BMW safety system logic.

Service Application and Installation Benefits

Replacement of the pretensioner is recommended after the airbag system has deployed or in case of mechanical damage to the seatbelt. Using an original pretensioner dedicated to BMW X3 F25 and X4 F26 allows for:

• Restoration of full safety system functionality after a collision or airbag deployment.
• Maintaining compliance with factory operating parameters of the SRS system, without the need for installation modifications.
• Professional repair in accordance with manufacturer guidelines, which is important for both safety and potential technical inspections.

This part from the Seatbelts and Parts category is particularly important in vehicles used dynamically or intensively, where the safety system must maintain full operational capability under all conditions.

Used Product Characteristics

The seatbelt pretensioner is offered as a used part, providing a cost-effective solution while retaining the original BMW construction. Such components are often chosen by workshops specializing in the BMW brand and by informed users seeking factory solutions at a reasonable price.

Before installation, standard verification of the electrical system and SRS diagnostics are recommended to confirm correct communication between the pretensioner and the airbag control unit, and to clear any errors stored in the onboard computer's memory.

Other BMW Seatbelts and Parts and Guide Materials

If you also need other parts from the BMW Seatbelts and Parts category for your car, check out the BMW seatbelts and parts available in our store to complete the entire system according to manufacturer requirements.

When planning more extensive modifications or repairs using used components, it is worth familiarizing yourself with practical tips on selecting parts. The article on our blog will be helpful: Tuning with Used Parts – How to Gain Performance Without Losing a Fortune, where we discuss how to responsibly use used components while maintaining vehicle safety and reliability.