Description
Electric window regulator motor for the left front window for PEUGEOT 407. With electric folding-in function. Driver’s door.
High-quality replacement electric window motor designed for the left front (driver’s) door of the Peugeot 407. This motor restores smooth, reliable window movement and supports the vehicle’s electric folding function when applicable. Ideal for professional garages and DIY enthusiasts who service Peugeot vehicles regularly. The part is commonly searched by its product codes, so matching the OE numbers below increases the chance of a correct fit.
Technical Information
- Manufacturer: Stellantis / Peugeot
- Model: Peugeot 407 (Left Front / Driver’s Door)
- Product Codes: 9646594580, 9221Z1
- Other Numbers: NFP
Fitment
Designed to fit Peugeot 407 left front door window regulator assemblies where the motor mounts to the regulator. Check that your vehicle uses a separate motor attached to the regulator (some variants have integrated assemblies).
Installation Recommendations
- Always disconnect the vehicle battery before starting work to avoid electrical short circuits and accidental window movement.
- Remove the door card and protective moisture barrier carefully to access the regulator and motor. Keep fasteners and clips organized for reassembly.
- Unplug the electrical connector and remove the mounting bolts that secure the motor to the regulator or door shell.
- If the motor is attached to the regulator, transfer any required clips, sliders or plates to the new motor as needed. Lubricate regulator guide rails and gears with suitable grease before installation.
- Reconnect the motor electrical plug and briefly reconnect the battery to test window operation and folding function (if applicable) before fully reassembling the door trim.
- Tighten mounting hardware to the manufacturer’s torque recommendations when available and ensure the window tracks are aligned to prevent binding.
- If unsure about disassembly of the regulator or handling electrical connectors, consider having the replacement performed by a qualified technician.
Why It Fails Most Often
- Wear of internal brushes and commutator from long-term use, leading to reduced motor performance or intermittent operation.
- Water ingress or corrosion inside the motor or connector area, commonly caused by damaged moisture barriers or worn door seals.
- Mechanical wear on the regulator: stripped gears, frayed cables or seized sliders increase load on the motor and accelerate failure.
- Electrical issues such as poor connector contacts, broken wires in the door harness or overload from obstructed window travel.
- Poor lubrication and dirt buildup in the window tracks or regulator guides causing binding and excessive current draw.
Additional Notes
This unit is supplied for the left front (driver’s) door of the Peugeot 407 and is often identified by OE codes 9646594580 and 9221Z1. Check that the physical mounting points and electrical connector match your vehicle before installation. Proper lubrication and correct alignment of the regulator significantly extend service life and reduce the risk of early failure.
