Product Overview

High-quality replacement power window regulator assembly designed for the left front (driver’s) door of Citroën C1 and Peugeot 107 models produced up to 2013. Supplied as a complete regulator mechanism compatible with the original fitment—ideal for professional workshops and DIY mechanics who need a reliable, direct-fit repair. Common search terms: window regulator Citroën C1, window regulator Peugeot 107, left front power window, 9221T8, 1629054280.

Function And Benefits

• Restores smooth, reliable operation of the left front power window—raises and lowers the glass via an electric motor and mechanical regulator.
• Replaces worn or damaged components that cause slow movement, grinding noises, or a window that drops out of its track.
• Direct-fit design for easy installation with OE-style fixing points and electrical connector for plug-and-play replacement in most cases.
• Improves vehicle security and comfort by returning proper sealing and operation to the driver door window.

Compatibility

Fits Citroën C1 and Peugeot 107 models (left front / driver door) produced up to year 2013. Always check the product codes below against your existing part number to ensure correct match.

Technical Information

• Manufacturer: Stellantis (Citroën / Peugeot)
• Model: Citroën C1, Peugeot 107 (Left Front / Driver’s Door)
• Product Codes: 9221T8, 1629054280
• Other Numbers: OEM reference cross-check recommended with the existing part number on your vehicle

Replacement Procedure (General Guide)

Intended for experienced DIYers and professional technicians. Typical steps:

• Disconnect battery before starting work to avoid short circuits and accidental motor operation.
• Remove the door trim panel by releasing fixings and clips (armrest screws, door handle fasteners), then detach any electrical connectors for switches and speakers.
• Peel back the water/vapour barrier carefully to access the regulator area.
• Support the glass (use suction cups or tape) and, if necessary, move the window to the position where the glass can be unbolted from the regulator arms.
• Disconnect the motor electrical connector and remove the bolts securing the regulator and motor assembly to the door shell.
• Extract the old regulator and fit the new unit in reverse order. Reattach the glass to the regulator, reconnect the motor, and test the window operation before reassembling the door trim.

Estimated time: 0.5–1.5 hours depending on experience and access to correct tools.

Mounting Recommendations

• Always disconnect the negative battery terminal before starting to avoid electrical damage.
• Use correct trim tools to avoid breaking plastic clips. Keep fasteners and clips organized for reassembly.
• Support the glass securely when detaching it from the regulator to prevent glass breakage and injury.
• After fitting, check window alignment and smooth travel; adjust guide channels if necessary and lubricate sliding points with an appropriate dry or silicone-based lubricant (avoid heavy grease that attracts dirt).
• Test full travel and safety reversal (if applicable) several times before final reassembly.

Why This Part Commonly Fails

• Cable-Driven Wear: Many regulators use cables and plastic pulleys that can fray, stretch, or break over time—leading to slipping, grinding, or the glass falling out of the track.
• Motor Wear: Repeated use leads to worn brushes and reduced torque in the window motor, causing slow or intermittent operation.
• Water Ingress And Corrosion: Moisture entering the door can corrode fixings and electrical connectors or contaminate moving parts, accelerating failure.
• Mechanical Impact Or Misalignment: Door impacts, slamming with the window partially open, or collapsed guide channels put extra stress on the regulator and shorten its life.

Practical Tips

• If the window moves with noise but still responds, inspect the regulator cables and pulleys before replacing the motor—sometimes the regulator alone is at fault.
• Replace worn felt or rubber guides and keep guide rails clean to extend the life of the new regulator.
• When replacing the regulator, consider checking the condition of the motor connector and door wiring for corrosion to avoid future electrical faults.

Final Notes

This product is supplied as a direct-replacement mechanical assembly for Citroën C1 and Peugeot 107 left front windows (driver door). Use the product codes 9221T8 and 1629054280 when searching for compatibility. Professional installation is recommended if you are not experienced with door trim removal and window alignment.