This is a used rear seat belt assembly designed for the left and right seating positions on Citroën C4 II (B7) and DS4 models. The FXX version comes in black and is equipped with an alarm/sensor for the seatbelt reminder system. The assembly is commonly referenced by product numbers 96871541XX, 8975ZR and 8976C2, which customers often use when searching for replacement parts.

Overview

Seat belts are a primary passive safety system: they restrain occupants during sudden deceleration or collision and interface with the vehicle’s seatbelt reminder/electrical system. This rear belt assembly is supplied complete for each side and usually incorporates the webbing, retractor mechanism and a buckle with alarm/contact switch (depending on specification). It is a direct-fit replacement for vehicles that originally used the FXX black configuration with alarm.

How It Is Replaced

Replacement should be carried out by a competent mechanic or an experienced DIYer who follows safety procedures. Typical removal/installation steps:

• Disconnect the vehicle battery before work to avoid accidental deployment of pyrotechnic devices or electrical faults.
• Remove rear seat cushion and interior trim panels to access mounting points and connectors.
• Disconnect any electrical connector for the buckle alarm/sensor if fitted.
• Unbolt the lower anchorage and retractor mounting bolts and remove the old belt assembly.
• Fit the replacement belt, secure all bolts to the manufacturer’s specified torque, reconnect electrical connectors and reassemble trim.
• Reconnect the battery and verify proper function: seatbelt warning light, buckle detection and smooth webbing operation.

Note: Some versions may include a pretensioner or integrated pyrotechnic device. If present, treat with care and follow manufacturer safety instructions. If you are unsure whether the unit contains a pretensioner, consult professional service documentation before attempting replacement.

Technical Information

• Manufacturer: Stellantis / Citroën
• Model: Citroën C4 II (B7), DS4
• Product Codes: 96871541XX, 8975ZR, 8976C2
• Additional Numbers: 8975ZR, 8976C2

Installation Recommendations

Always disconnect the battery before starting work. Use the correct tools and torque settings for anchorage bolts (refer to factory torque specs). Inspect seatbelt mounting points and surrounding structure for corrosion or damage and repair if necessary. Verify the electrical connector for the buckle alarm is clean and makes good contact. After installation, check webbing runs freely without twists and perform a functional test of the seatbelt warning system.

Why This Part Most Commonly Fails

Common causes for replacement include impact damage from an accident (deployment or belt stretching), frayed or worn webbing from prolonged use, contaminated or jammed retractors due to dirt/debris, corrosion of anchorage hardware and failure of the buckle switch or alarm sensor. In many cases belts are replaced after a crash even if the damage is not obvious, because load-limiting properties can be compromised.

Compatibility And Notes

This assembly matches vehicles specified for the FXX black version with alarm. Customers commonly search by product numbers (96871541XX / 8975ZR / 8976C2) to find the correct item. Ensure the belt orientation (left/right) and the presence of an alarm sensor match your vehicle’s configuration before installation.

Product Overview

This seat belt lock bracket (buckle mounting) is a direct-fit replacement designed for Citroën C4 II and DS4 models. Supplied in FXX black finish with integrated alarm functionality, the bracket secures the belt buckle to the vehicle structure and carries the seat-belt warning switch wiring. Commonly searched under OEM codes 96748384XT and 8976R0, this part is suitable for professional workshops and competent DIYers who perform interior and safety-system repairs.

Who Should Buy This

Intended for auto mechanics, body shops and experienced DIY enthusiasts working on Citroën/Peugeot (Stellantis) platforms. Ideal when the buckle mount is damaged in a collision, corroded, or when the belt warning alarm no longer operates due to a faulty bracket or connector.

Function And Key Features

• Secures the seat belt buckle to the vehicle floor or seat frame and positions the buckle for reliable latching.
• Integrated alarm/sensor contact to feed the seat-belt warning circuit (black FXX finish).
• Direct-fit replacement for original mounting points to preserve factory alignment and safety performance.
• Supplied with or prepared for original-type connector for quick electrical reconnection.

How To Replace (Basic Guide)

Replacement should be carried out by a trained technician or an experienced DIYer who follows safety procedures. Typical steps:

• Park the vehicle on level ground and engage the parking brake.
• Disconnect the negative battery terminal before working near restraint system components and wait the interval recommended by the vehicle manufacturer to prevent accidental deployment of any restraint devices.
• Remove any trim, seat cushions or seat mounting covers that obstruct access to the buckle bracket.
• Locate and disconnect the electrical connector for the buckle alarm/switch.
• Remove the fasteners securing the bracket (retain fasteners if reusable or replace with new OEM-grade bolts). Use a torque wrench and tighten to the manufacturer’s torque specification.
• Fit the new bracket, reconnect the sensor connector, reinstall trim and seats, reconnect the battery and verify buckle operation and that the seat-belt warning lamp behaves correctly. If a warning lamp or fault code appears, read and clear codes with a diagnostic tool.

Installation Recommendations

• Always follow the vehicle manufacturer’s service manual and torque settings; use a calibrated torque wrench for final tightening.
• Inspect wiring insulation and terminals for corrosion or damage; replace or repair connectors if necessary to ensure reliable alarm function.
• Replace mounting bolts if they show thread damage or corrosion; use grade-equivalent fasteners when specified.
• After installation, perform a functional check of the buckle latch, belt retraction and seat-belt warning system to confirm correct operation.

Most Common Failure Causes

• Corrosion From Moisture Or Road Salt: Fastener or bracket corrosion can seize hardware or weaken the mount.
• Mechanical Damage From Impacts: Collision or heavy load can deform the bracket or break the mounting points.
• Wear And Fatigue: Repeated use and abrasion can eventually affect the latch geometry or sensor mounting.
• Electrical Faults: Damaged wiring, connectors or switch contacts related to the alarm function cause warning lamp or signaling issues.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C4 II, DS4
• Product Codes: 96748384XT, 8976R0
• Additional Numbers: 8976R0 (alternate reference)

Buy this seat belt lock bracket for a reliable, OEM-fit replacement that restores correct buckle positioning and seat-belt alarm function. Use the product codes 96748384XT and 8976R0 when searching for exact-fit parts and workshop reference.