Description
Window regulator mechanism for the left front window for Peugeot 307 5-door. Driver’s door.
Product Overview
High-quality window regulator mechanism designed for the left front (driver’s) door of the Peugeot 307 5-door. This unit restores smooth and reliable operation of the power window, replacing worn cables, broken guides or a failed motor drive. Commonly searched by part numbers 9634456980 and 9221K0, the regulator is suitable for professional workshops and DIY mechanics who need a direct-fit replacement for the Peugeot 307.
Technical Information
- Manufacturer: Stellantis (Peugeot/Citroën)
- Model: Peugeot 307 (5-door) — Left Front Door
- Product Codes: 9634456980, 9221K0, NFP
- Other Numbers: 9634456980, 9221K0
Function
The window regulator converts the rotary motion of the electric motor into the vertical movement of the glass, guiding the window along its tracks and keeping it aligned. It integrates mechanical components such as cables, pulleys, sliders and mounting brackets to safely raise and lower the glass on command from the door switch.
Replacement Procedure
Suitable for experienced DIYers and professional mechanics. Basic steps:
- Disconnect the negative battery terminal before starting work to prevent short circuits and accidental operation.
- Remove the door trim and any interior panels to access the regulator. Carefully detach clips and screws without damaging trim or wiring.
- Peel back the moisture barrier to expose the regulator and motor assembly.
- Support the glass in a raised position (use tape or a helper) and loosen the bolts or clips that attach the glass to the regulator.
- Disconnect the electrical connector for the window motor.
- Unbolt the regulator assembly from the door and remove it through the service openings.
- Install the new regulator in reverse order: secure the assembly, reconnect the motor wiring, reattach the glass, and test the window operation before refitting the moisture barrier and door trim.
Installation Recommendations
- Always disconnect the battery before removing the regulator to avoid injury or damage to the electrical system.
- Check and clean window guides and channels; light lubrication with a suitable silicone grease will improve smooth operation and reduce wear.
- Verify the glass alignment and adjust before fully tightening fasteners to prevent binding and excessive motor load.
- Test the complete range of motion of the window several times prior to final reassembly to ensure correct fitment and electrical connection.
Most Common Failure Causes
Window regulators on Peugeot 307 vehicles typically fail due to wear of mechanical parts and exposure to moisture. The most frequent issues are:
- Frayed or broken cables and worn sliders that lead to uneven movement or jammed windows.
- Plastic guide and pulley failure, especially on older units where plastics become brittle.
- Motor failure caused by water ingress, corrosion or excessive load from misaligned glass.
- Corroded fasteners or seized mounting points that make removal and installation more difficult.
Notes For Buyers
If you are searching by part number, use 9634456980 or 9221K0 to find the correct regulator for the left front door of the Peugeot 307 5-door. Proper installation and attention to door seals and drainage will extend the service life of the new regulator.
