Description
Right Front Belt, Pyrotechnic Pretensioner, Passenger Seat Belt For Peugeot 407. Color FXX Black
This right front passenger seat belt assembly is designed for Peugeot 407 vehicles and includes a pyrotechnic pretensioner for rapid occupant restraint in the event of a collision. Ideal for professional workshops and experienced DIY mechanics, this replacement part restores reliable restraint performance and helps maintain SRS system integrity when fitted correctly. The assembly is compatible with Peugeot/Citroën platforms within the Stellantis group — check the product codes below for a precise match.
Function And Benefits
The assembly combines a webbing retractor, locking mechanism and a pyrotechnic pretensioner. In a crash event the pretensioner activates to remove slack from the belt instantly, improving occupant restraint and reducing forward movement. Benefits include restored belt locking behaviour, secure passenger retention, and compliance with original safety design when installed according to manufacturer guidelines.
Common Failure Modes And Frequency
Seat belts typically fail or require replacement for a few common reasons: deployment in a previous collision (pretensioner activation), visible fraying or cuts to the webbing, retractor locking or unreeling faults, corrosion or damage to electrical connectors related to the pretensioner, and wear from long-term use or contamination. Frequency depends on vehicle usage and environment — belts can last the vehicle lifetime if undamaged, but any involvement in a crash or signs of wear warrant immediate replacement.
How The Replacement Is Done
Replacement should be performed by a qualified technician or an experienced DIYer comfortable working with SRS components. Typical steps:
- Disconnect the negative battery terminal and wait at least 10 minutes to deactivate the airbag/pretensioner circuitry.
- Remove interior trim panels and B-pillar covers to access the belt assembly mounting points.
- Unbolt the lower anchor and shoulder/upper anchor bolts and disconnect any electrical connector for the pretensioner.
- Remove the old assembly and fit the new unit, routing the webbing exactly as the original.
- Tighten all mounting bolts to the manufacturer’s torque specification and reconnect the pretensioner connector.
- Reassemble trim, reconnect the battery, and verify that the SRS/airbag warning light returns to its normal state after ignition.
Always follow manufacturer torque specs and safety procedures. If the vehicle was involved in a collision, inspect mounting points and surrounding structure for deformation before fitting a new belt.
Installation Recommendations
- Disconnect the battery and allow the SRS capacitors to discharge (minimum 10 minutes) before working on the belt or pretensioner.
- Use correct sockets/torque wrench and follow OEM torque values for all fasteners.
- Replace damaged trim clips and any single-use fasteners if specified by manufacturer documentation.
- Handle the pyrotechnic pretensioner carefully — avoid impacts, heat sources or connecting the battery until installation is fully complete.
- After installation, confirm SRS warning light behaviour; unresolved warnings indicate a fault in the circuit or connector that must be addressed.
Technical Information
- Manufacturer: Stellantis (Peugeot / Citroën)
- Model: Peugeot 407
- Product Codes: 96439574XX, 8974HH, NFP
- Additional Numbers: Color FXX Black
Why This Part Is Often Replaced
Seat belt pretensioners are most often replaced after deployment in a crash, when the pyrotechnic element has activated. Other common reasons are visible damage to the webbing (cuts, severe abrasion), retractor failure (belt not locking or not retracting), or corrosion/damage to electrical connectors that prevent proper pretensioner function. Replacing a compromised belt assembly restores occupant protection and ensures the restraint system operates as designed.
This replacement right front passenger belt is a straightforward, safety-critical repair for the Peugeot 407 — fitment using correct procedures ensures reliable operation and peace of mind for both professional technicians and knowledgeable DIYers.
