Description
Left Front Pyrotechnic Pretensioner for Citroën C2, C3 and Pluriel. Pyrotechnic Seat Belt Holder. Driver Seat.
This left front pyrotechnic seat belt pretensioner is an OEM-fit safety component designed for Citroën and compatible Peugeot models. It secures the driver during a crash by instantly removing slack from the seat belt, reducing forward movement and improving occupant protection. The part is commonly searched by product codes 9640676877 and 8973TH, making it easy to find for mechanics and DIY enthusiasts looking for a direct replacement for vehicles involved in collisions or showing airbag/seatbelt fault codes.
Technical Information
- Manufacturer: Stellantis / Citroën / Peugeot
- Model: Citroën C2; Citroën C3; Citroën C3 Pluriel; Peugeot 1007
- Product Codes: 9640676877, 8973TH
- Additional Numbers: NFP
Compatibility & Fitment
Direct fit for the Left Front (Driver Side) seat position on the listed models. Intended specifically for the driver seat belt system; check physical mounting location and connector shape against the removed unit to confirm match before installation.
Function
The pyrotechnic pretensioner is part of the supplemental restraint system (SRS). In the event of a collision the device fires a small pyrotechnic charge that retracts the seat belt webbing instantly, tightening the belt and reducing occupant travel. After activation (deployment) the pretensioner must be replaced, as the pyrotechnic element is single-use.
Installation Recommendations
- Always follow manufacturer repair procedures. Disconnect the negative battery terminal and wait an appropriate interval to allow SRS capacitors to discharge before beginning work.
- Handle the unit carefully; it contains a pyrotechnic element. Avoid impacts, heat sources and exposure to moisture.
- Remove trim panels and seat bolting as needed to access the pretensioner mounting points. Unplug the electrical connector by releasing any locking tabs.
- Fit the new pretensioner in the correct orientation and use manufacturer-specified bolts and torque values where available.
- After replacement, clear SRS fault codes with a qualified diagnostic tool and confirm system readiness. If in doubt, have final checks performed by a professional with SRS experience.
Why This Part Most Often Fails
The most frequent cause of pretensioner replacement is deployment in a crash; once triggered the pyrotechnic element is expended and the unit is no longer functional. Other common issues include electrical connector corrosion, water ingress, damage from improper removal or impact, and fault codes caused by shorts or wiring damage. Long-term exposure to moisture and poor electrical contacts can also render the unit unreliable.
Notes For Mechanics And DIYers
Searches for this part often use the product codes 9640676877 or 8973TH, so including these numbers in your parts list will speed up procurement. Because the pretensioner is a safety-critical, pyrotechnic device, replacement and diagnostics should be performed by qualified personnel or by experienced DIYers who strictly follow safety procedures and use appropriate diagnostic equipment.
