Description
Roof Airbag For Citroën C4 II And DS4. Driver Side – Left.
This used roof airbag is designed for Citroën C4 II (B7) and DS4 models and fits the left-hand driver side position. Ideal for professional workshops and experienced DIY mechanics who require an OEM-fit safety component, this part restores side-impact and rollover protection in the vehicle’s passenger compartment. Supplied with original manufacturer part numbers for quick lookup, it is a direct replacement for damaged or deployed roof (curtain) airbags.
Key Features And Benefits
– OEM compatibility with Citroën C4 II (B7) and DS4 models, ensuring correct fit and deployment geometry.
– Restores side-impact and rollover protection to meet original safety design.
– Supplied with original part numbers to simplify searching and ordering.
– Suitable For Professional Fitment And Experienced DIY Technicians.
Function And Application
The roof (curtain) airbag deploys along the vehicle’s A- and B-pillar / roof rail area to protect the head and upper torso of occupants during side impacts and rollovers. This left-hand driver-side unit is positioned in the headliner/roof rail and connects to the vehicle’s Supplemental Restraint System (SRS). It is intended as a replacement for an airbag that has been deployed, damaged, or become electrically unreliable.
How Replacement Is Performed
General replacement steps (for qualified technicians or experienced DIYers):
- Disconnect The Battery And Wait At Least 10 Minutes (Or Follow Manufacturer Specified Time) To Allow SRS Capacitors To Discharge.
- Remove Interior Trim And Headliner Sections Necessary To Access The Airbag Module And Fasteners.
- Carefully Disconnect The Airbag Electrical Connector(s) And Any Retention Clips.
- Unbolt The Old Airbag Module And Remove It From The Roof Rail.
- Install The Replacement Airbag In Reverse Order, Ensuring Correct Routing And Secure Fastening Of All Fixings.
- Reconnect The Battery, Perform An SRS System Check/Clear Faults With A Diagnostic Tool, And Confirm That The SRS Warning Lamp Operates Normally.
Always Follow Manufacturer Procedures And Torque Values. If Uncertain, Have The Replacement Performed By A Qualified Workshop.
Technical Information
- Manufacturer: Stellantis / Citroën (OEM Fitment)
- Model: Citroën C4 II (B7), DS4
- Product Codes: 9687158780, 9801890780
- Additional Numbers: 821601
Installation Recommendations
Disconnect The Battery Before Any Work On The SRS System And Observe All Safety Precautions. Use Proper Trim Removal Tools To Avoid Damaging The Headliner. After Installation, Use A Diagnostic Scanner Capable Of SRS Functions To Clear Any Stored Fault Codes And Confirm System Readiness. If You Are Not Equipped With SRS Diagnostic Tools, Have A Qualified Technician Complete The Final Verification.
Why This Part Typically Fails
Roof Airbags Are Usually Replaced Because They Were Deployed In A Collision. Other Common Causes For Replacement Include Water Ingress Or Corrosion From Prior Interior Damage, Physical Damage To The Module Or Housing, And Electrical Faults Or Connector Damage Caused By Previous Repairs Or Accidents. Airbags Do Not Have A Defined Service Life Under Normal Conditions, But Any Deployment, Visible Damage, Or SRS Fault Code Warrants Immediate Replacement.
Compatibility And Notes
Designed For Citroën C4 II (B7) And DS4 Applications In The Left-Hand Driver-Side Roof Position. Refer To The Listed Product Codes When Searching For Exact Fits. This Is A Used Part Intended For Replacement Of Deployed Or Damaged Airbag Modules.
