Description
Left front seat belt, pyrotechnic seat belt, driver’s belt for Peugeot 407. Color FXX black.
This left front seat belt with pyrotechnic pre-tensioner is a direct-fit safety component for the Peugeot 407. Designed for workshop professionals and experienced DIY mechanics, this part restores the primary occupant restraint on the driver’s side after wear or accident-related deployment. Customers frequently search by product codes such as 96439575XX or 8974HG, so this listing optimizes visibility for those keyword searches and for terms like “Peugeot 407 seat belt” and “left front driver seat belt.” The pyrotechnic pre-tensioner tightens the belt instantly in the event of a crash to reduce occupant movement and works together with the airbag system to improve protection.
Technical Information
- Manufacturer: Stellantis (Citroén / Peugeot)
- Model: Peugeot 407 (Left Front)
- Product Codes: 96439575XX, 8974HG, NFP
- Additional Numbers: Color Code FXX (Black)
Fitment And Compatibility
Fits Peugeot 407 models. Verify that the part codes (96439575XX / 8974HG) match the belt being replaced. This is the left front (driver’s side) assembly with an integrated pyrotechnic pre-tensioner; it replaces the original driver-side retractor assembly when required.
Function And Common Failure Modes
The seat belt retractor with pyrotechnic pre-tensioner performs two functions: (1) during normal use it locks and retracts smoothly to keep the occupant restrained; (2) in a severe impact the pyrotechnic pre-tensioner activates to remove slack instantly, improving the effectiveness of the airbag. The most common reasons this part requires replacement are:
- Deployment In A Collision: The pre-tensioner is a one-time-use device and must be replaced after activation.
- Mechanical Wear And Contamination: Frayed webbing, dirt ingress, or jamming of the retractor can prevent proper locking or retraction.
- Connector Or Wiring Damage: Electrical faults that prevent the pre-tensioner from communicating with the SRS system.
- Corrosion Or Internal Mechanism Failure: Moisture or impact damage that impairs the retractor spring or locking pawl.
Installation Recommendations
Replacement should be carried out by a qualified technician or an experienced DIY mechanic familiar with supplemental restraint systems (SRS). Recommended steps:
- Disconnect the negative battery terminal and wait the manufacturer-recommended interval to ensure the SRS system is de-energized before working on the belt assembly.
- Remove interior trim panels and lower the B-pillar trim carefully to access the upper anchor and retractor mounting points.
- Unbolt the lower anchor and the retractor mounting bolts. Disconnect the pre-tensioner electrical connector with care to avoid damaging terminals.
- Install the new assembly in the reverse order. Ensure the webbing feeds correctly and is not twisted, and that the retractor is orientated as original.
- Tighten all fasteners to the vehicle manufacturer’s specified torque values and secure trim panels. Reconnect the battery and clear any SRS fault codes with an appropriate diagnostic tool if required.
Do not attempt to reuse a belt that shows signs of fraying, chemical contamination, or any evidence of pre-tensioner deployment. Always follow vehicle manufacturer instructions for safe handling of SRS components.
Why This Part Is Often Searched By Code
Mechanics and DIYers commonly look up replacement belts by OE numbers (e.g., 96439575XX, 8974HG) because they provide fast verification of fitment. Including these codes in the listing improves findability on search engines and in parts catalogs.
If you are replacing the driver’s seat belt on a Peugeot 407, this left front pyrotechnic belt assembly offers a direct-fit safety solution with standard mounting points and the correct color finish (FXX black) for a factory-appearing repair.
