Description
Right Front Seat Belt, Pyrotechnic Seat Belt, Passenger Side For Peugeot 407. Color FXX Black.
This is a right front (passenger side) pyrotechnic seat belt assembly designed for Peugeot 407 models. The unit includes a pretensioner mechanism that activates in a severe impact to remove slack from the webbing, improving occupant restraint in combination with the airbag system. The belt webbing is Black (Color Code FXX). Ideal for professional workshops and experienced DIYers looking for an original-style replacement using the manufacturer part coding.
Technical Information
- Manufacturer: Stellantis
- Model: Peugeot 407 (Sedan/Saloon, SW/Estate, Coupe)
- Product Codes: 96439574XX
- Additional Numbers: 8974HH
- Color: FXX Black
Function And Application
The unit is a front passenger seat belt with an integrated pyrotechnic pretensioner. In the event of a crash the pretensioner activates to retract the belt webbing rapidly, reducing forward movement of the occupant and improving the effectiveness of the airbag. This component is used on Peugeot 407 vehicles equipped with front occupant restraint systems.
Replacement Procedure (Overview)
Work on pyrotechnic seat belts and SRS components requires care. Follow these high-level steps as guidance for trained technicians or competent DIYers:
- Park the vehicle on a level surface and switch off the ignition.
- Disconnect the negative battery terminal and wait at least 10–15 minutes to allow SRS capacitors to discharge.
- Remove interior trim panels necessary to access the B-pillar and buckle anchorage.
- Unbolt the lower anchor and the retractor mounting bolts; carefully disconnect the electrical connector for the pretensioner.
- Install the new belt assembly in the reverse order of removal. Ensure connectors are fully seated and wiring is undamaged.
- Torque all mounting bolts to the manufacturer’s specifications and perform an SRS system scan to clear any fault codes and confirm proper operation.
Installation Recommendations
- Always follow manufacturer repair procedures and torque values. If in doubt, refer to official workshop documentation.
- Do Not Attempt To Reuse A Deployed Pretensioner. Any seat belt that has been activated in a collision must be replaced.
- Handle the pyrotechnic connector and wiring with care; avoid pulling on the webbing to operate the mechanism.
- After installation, verify SRS system readiness with a diagnostic tool and ensure there are no airbag or belt fault indicators on the instrument cluster.
Why This Part Fails Most Often
Seat belts with pyrotechnic pretensioners generally do not fail under normal use. The most common causes of replacement are:
- Deployment During A Collision — The pretensioner is single-use and must be replaced after activation.
- Corrosion Or Mechanical Seizure — Moisture ingress or prolonged exposure can cause the retractor to bind.
- Visible Damage To Webbing — Cuts, fraying, or chemical contamination of the belt webbing compromise safety and require replacement.
- Electrical Connector Faults — Damaged or corroded wiring/connectors can prevent pretensioner operation and trigger SRS faults.
Service Life And Inspection
Under normal conditions the belt assembly is intended to last the life of the vehicle, but it should be inspected after any collision, after water ingress incidents, or if the SRS warning lamp indicates a fault. Replace immediately if the webbing is damaged or if the pretensioner connector shows evidence of corrosion.
Keywords: Peugeot 407 Right Front Seat Belt, Pyrotechnic Seat Belt, Pretensioner, 96439574XX, 8974HH.
